High level conclusions

Fuzzer LanguageStringEncoderFuzzer is blocked:

The runtime code coverage of LanguageStringEncoderFuzzer covers 13.41% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer HmacUtilsFuzzer is blocked:

The runtime code coverage of HmacUtilsFuzzer covers 25.92% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer MurmurHashFuzzer is blocked:

The runtime code coverage of MurmurHashFuzzer covers 15.38% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer DigestUtilsFuzzer is blocked:

The runtime code coverage of DigestUtilsFuzzer covers 6.666% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer CryptFuzzer is blocked:

The runtime code coverage of CryptFuzzer covers 9.090% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer PhoneticEngineFuzzer is blocked:

The runtime code coverage of PhoneticEngineFuzzer covers 2.816% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer BinaryEncodingFuzzer is blocked:

The runtime code coverage of BinaryEncodingFuzzer covers 6.25% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzers reach 6.912% of cyclomatic complexity.

Fuzzers reach 2.267% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

42 / 1852

Cyclomatic complexity statically reachable by fuzzers

216 / 3125

Runtime code coverage of functions

142 / 1852

Warning: The number of runtime covered functions are larger than the number of reachable functions. This means that Fuzz Introspector found there are more functions covered at runtime than what is considered reachable based on the static analysis. This is a limitation in the analysis as anything covered at runtime is by definition reachable by the fuzzers.
This is likely due to a limitation in the static analysis. In this case, the count of functions covered at runtime is the true value, which means this is what should be considered "achieved" by the fuzzer.

Use the project functions table below to query all functions that were not covered at runtime.

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

Fuzzer: BinaryEncodingFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	1	5.0%
gold	[1:9]	18	90.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	5.0%
All colors	20	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
1	18	[BinaryEncodingFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00018

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

15

Reachable functions

16

Percentage of reachable functions covered

6.25%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
BinaryEncodingFuzzer.java	16

Fuzzer: PhoneticEngineFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	72	88.8%
gold	[1:9]	8	9.87%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	1.23%
All colors	81	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
71	9	[PhoneticEngineFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00009	[org.apache.commons.codec.language.bm.PhoneticEngine].encode(String,Languages.LanguageSet)
1	6	[PhoneticEngineFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00006

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

69

Reachable functions

71

Percentage of reachable functions covered

2.82%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
PhoneticEngineFuzzer.java	8
commons-codecmain/java/org/apache/commons/codec/language/bm/PhoneticEngine.java	45
commons-codecmain/java/org/apache/commons/codec/language/bm/Lang.java	6
commons-codecmain/java/org/apache/commons/codec/language/bm/Rule.java	10

Fuzzer: CryptFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	35	83.3%
gold	[1:9]	6	14.2%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	2.38%
All colors	42	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
27	14	[org.apache.commons.codec.digest.B64].getRandomSalt(int)	call site: 00014	[org.apache.commons.codec.digest.UnixCrypt].crypt(byte[],String)
5	3	[CryptFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00003	[org.apache.commons.codec.digest.Crypt].crypt(byte[],String)
3	9	[org.apache.commons.codec.digest.Sha2Crypt].sha512Crypt(byte[])	call site: 00009	[org.apache.commons.codec.digest.Sha2Crypt].sha512Crypt(byte[],String)

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

30

Reachable functions

33

Percentage of reachable functions covered

9.09%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
CryptFuzzer.java	8
commons-codecmain/java/org/apache/commons/codec/digest/Crypt.java	6
commons-codecmain/java/org/apache/commons/codec/digest/Sha2Crypt.java	3
commons-codecmain/java/org/apache/commons/codec/digest/B64.java	2
commons-codecmain/java/org/apache/commons/codec/digest/Md5Crypt.java	3
commons-codecmain/java/org/apache/commons/codec/digest/UnixCrypt.java	13

Fuzzer: DigestUtilsFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	0	0.0%
gold	[1:9]	15	93.7%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	6.25%
All colors	16	100

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

14

Reachable functions

15

Percentage of reachable functions covered

6.67%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
DigestUtilsFuzzer.java	15

Fuzzer: MurmurHashFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	0	0.0%
gold	[1:9]	12	92.3%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	7.69%
All colors	13	100

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

11

Reachable functions

13

Percentage of reachable functions covered

15.38%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
MurmurHashFuzzer.java	12
commons-codecmain/java/org/apache/commons/codec/digest/MurmurHash3.java	1

Fuzzer: HmacUtilsFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	7	22.5%
gold	[1:9]	23	74.1%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	3.22%
All colors	31	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
5	22	[HmacUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00022	[org.apache.commons.codec.binary.Hex].encodeHexString(byte[])
1	5	[HmacUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00005
1	15	[org.apache.commons.codec.binary.Hex].encodeHex(byte[],boolean)	call site: 00015

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

20

Reachable functions

27

Percentage of reachable functions covered

25.93%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
HmacUtilsFuzzer.java	15
commons-codecmain/java/org/apache/commons/codec/digest/HmacUtils.java	5
commons-codecmain/java/org/apache/commons/codec/binary/Hex.java	6
commons-codecmain/java/org/apache/commons/codec/binary/StringUtils.java	1

Fuzzer: ChecksumFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	1	7.69%
gold	[1:9]	11	84.6%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	7.69%
All colors	13	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
1	3	[ChecksumFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00003

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

4

Reachable functions

10

Percentage of reachable functions covered

60.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
ChecksumFuzzer.java	10
commons-codecmain/java/org/apache/commons/codec/digest/XXHash32.java	1
commons-codecmain/java/org/apache/commons/codec/digest/PureJavaCrc32.java	1
commons-codecmain/java/org/apache/commons/codec/digest/PureJavaCrc32C.java	1

Fuzzer: LanguageStringEncoderFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	103	81.7%
gold	[1:9]	22	17.4%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	0.79%
All colors	126	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
72	53	[LanguageStringEncoderFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00053	[org.apache.commons.codec.language.bm.PhoneticEngine].encode(String)
15	34	[LanguageStringEncoderFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00034	[org.apache.commons.codec.language.Soundex].hasMarker(char[])
7	15	[LanguageStringEncoderFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00015
5	25	[LanguageStringEncoderFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00025
4	6	[LanguageStringEncoderFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00006

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

71

Reachable functions

82

Percentage of reachable functions covered

13.41%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
LanguageStringEncoderFuzzer.java	18
commons-codecmain/java/org/apache/commons/codec/language/DaitchMokotoffSoundex.java	2
commons-codecmain/java/org/apache/commons/codec/language/Nysiis.java	1
commons-codecmain/java/org/apache/commons/codec/language/RefinedSoundex.java	2
commons-codecmain/java/org/apache/commons/codec/language/Soundex.java	5
commons-codecmain/java/org/apache/commons/codec/language/bm/BeiderMorseEncoder.java	2
commons-codecmain/java/org/apache/commons/codec/language/bm/PhoneticEngine.java	45
commons-codecmain/java/org/apache/commons/codec/language/bm/Lang.java	6
commons-codecmain/java/org/apache/commons/codec/language/bm/Rule.java	10

Fuzzer: NetCodecFuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	5	17.2%
gold	[1:9]	23	79.3%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	1	3.44%
All colors	29	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
1	8	[org.apache.commons.codec.net.PercentCodec]. (byte[],boolean)	call site: 00008	[org.apache.commons.codec.net.PercentCodec].insertAlwaysEncodeChars(byte[])
1	14	[NetCodecFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00014
1	18	[NetCodecFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00018
1	21	[NetCodecFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)	call site: 00021
1	23	[org.apache.commons.codec.net.URLCodec]. ()	call site: 00023

Runtime coverage analysis

Covered functions

477

Functions that are reachable but not covered

10

Reachable functions

16

Percentage of reachable functions covered

37.5%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
NetCodecFuzzer.java	12
commons-codecmain/java/org/apache/commons/codec/net/BCodec.java	1
commons-codecmain/java/org/apache/commons/codec/net/PercentCodec.java	6
commons-codecmain/java/org/apache/commons/codec/net/QCodec.java	2
commons-codecmain/java/org/apache/commons/codec/net/QuotedPrintableCodec.java	2
commons-codecmain/java/org/apache/commons/codec/net/URLCodec.java	2

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name	Functions filename	Arg count	Args	Function depth	hitcount	instr count	bb count	cyclomatic complexity	Reachable functions	Incoming references	total cyclomatic complexity	Unreached complexity

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers

42 / 1852

Cyclomatic complexity statically reachable by fuzzers

216 / 3125

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

BinaryEncodingFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['[BinaryEncodingFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)']

PhoneticEngineFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['[PhoneticEngineFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)']

CryptFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['[org.apache.commons.codec.digest.B64].getRandomSalt(int)', '[CryptFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)', '[org.apache.commons.codec.digest.Sha2Crypt].sha512Crypt(byte[])']

DigestUtilsFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

MurmurHashFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

HmacUtilsFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['[HmacUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)', '[org.apache.commons.codec.binary.Hex].encodeHex(byte[],boolean)']

ChecksumFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['[ChecksumFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)']

LanguageStringEncoderFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['[LanguageStringEncoderFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)']

NetCodecFuzzer.java

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['[org.apache.commons.codec.net.PercentCodec].(byte[],boolean)', '[NetCodecFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider)', '[org.apache.commons.codec.net.URLCodec].()']

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name	Function total lines	Lines covered at runtime	percentage covered	Reached by fuzzers
[org.apache.commons.codec.digest.UnixCrypt].body(int[],int,int)	33	0	0.0%	[]
[org.apache.commons.codec.digest.UnixCrypt].crypt(byte[],java.lang.String)	39	3	7.692%
[org.apache.commons.codec.digest.UnixCrypt].desSetKey(byte[])	36	0	0.0%	[]
[org.apache.commons.codec.digest.MurmurHash3$IncrementalHash32x86].add(byte[],int,int)	34	0	0.0%
[org.apache.commons.codec.digest.Md5Crypt].md5Crypt(byte[],java.lang.String,java.lang.String,java.util.Random)	62	0	0.0%

New fuzzers

The below fuzzers are templates and suggestions for how to target the set of optimal functions above

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file	Reached by	Covered by
/src/commons-codec/src/main/java/org/apache/commons/codec/net/URLCodec.java	['NetCodecFuzzer']	['NetCodecFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/StringUtilsTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/Encoder.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/BinaryCodecTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/Base16.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/PureJavaCrc32C.java	['ChecksumFuzzer']	['ChecksumFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/Md5CryptTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/MatchRatingApproachEncoder.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/PhoneticEnginePerformanceTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/Md5Crypt.java	['CryptFuzzer']	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/DoubleMetaphone2Test.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/Sha512CryptTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base16Test.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/BinaryDecoder.java	[]	[]
/src/ChecksumFuzzer.java	['ChecksumFuzzer']	['ChecksumFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/BaseNCodecTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base64OutputStreamTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/CryptTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/RFC1522OverrideTestCodec.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/net/PercentCodec.java	['NetCodecFuzzer']	['NetCodecFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/DigestUtils.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/PureJavaCrc32.java	['ChecksumFuzzer']	['ChecksumFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/MessageDigestAlgorithms.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/Caverphone1Test.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/StringUtils.java	['HmacUtilsFuzzer']	['HmacUtilsFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/net/Utils.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/MatchRatingApproachEncoderTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/QCodecTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/Base32.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/BaseNCodecInputStream.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base32InputStreamTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/CharSequenceUtilsTest.java	[]	[]
/src/MurmurHashFuzzer.java	['MurmurHashFuzzer']	['MurmurHashFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/HmacUtils.java	['HmacUtilsFuzzer']	['HmacUtilsFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/UnixCryptTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/UtilsTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/RFC1522CodecTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/RefinedSoundex.java	['LanguageStringEncoderFuzzer']	['LanguageStringEncoderFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/StringEncoderComparatorTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base32Test.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/PhoneticEngineTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/CacheSubSequencePerformanceTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/AbstractStringEncoderTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/EncoderExceptionTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/CharsetsTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/BinaryEncoder.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/Decoder.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/SoundexTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/UnixCrypt.java	['CryptFuzzer']	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/DigestUtilsTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/Nysiis.java	['LanguageStringEncoderFuzzer']	['LanguageStringEncoderFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/AllocateDirectHexTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/cli/Digest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base32OutputStreamTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/PureJavaCrc32Test.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/MurmurHash3Test.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/NysiisTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/net/RFC1522Codec.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/Sha256CryptTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/net/BCodec.java	['NetCodecFuzzer']	['NetCodecFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base16InputStreamTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/Caverphone2Test.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/Sha2CryptTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/BCodecTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/bm/Rule.java	['PhoneticEngineFuzzer', 'LanguageStringEncoderFuzzer']	['PhoneticEngineFuzzer', 'LanguageStringEncoderFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/MessageDigestAlgorithmsTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/PhoneticEngineRegressionTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/ColognePhonetic.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/Metaphone.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/Sha2Crypt.java	['CryptFuzzer']	['CryptFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base64Test.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/HmacAlgorithmsTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/Caverphone1.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/ColognePhoneticTest.java	[]	[]
/src/PhoneticEngineFuzzer.java	['PhoneticEngineFuzzer']	['PhoneticEngineFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/language/bm/BeiderMorseEncoder.java	['LanguageStringEncoderFuzzer']	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/StringEncoderComparator.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/bm/PhoneticEngine.java	['PhoneticEngineFuzzer', 'LanguageStringEncoderFuzzer']	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/QuotedPrintableCodecTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/RefinedSoundexTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/DaitchMokotoffSoundexTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/SoundexUtils.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/Crypt.java	['CryptFuzzer']	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/MurmurHash2Test.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/Blake3.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base64InputStreamTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/StringEncoder.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/bm/Languages.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/HexTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/XXHash32.java	['ChecksumFuzzer']	['ChecksumFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/language/Soundex.java	['LanguageStringEncoderFuzzer']	['LanguageStringEncoderFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/net/QuotedPrintableCodec.java	['NetCodecFuzzer']	['NetCodecFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/BinaryEncoderAbstractTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/CharSequenceUtils.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/PercentCodecTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/Blake3TestVectorsTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base16OutputStreamTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/Caverphone.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/BinaryCodec.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/StringDecoder.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/CharEncodingTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/DaitchMokotoffSoundex.java	['LanguageStringEncoderFuzzer']	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/BaseNCodec.java	[]	[]
/src/BinaryEncodingFuzzer.java	['BinaryEncodingFuzzer']	['BinaryEncodingFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/PureJavaCrc32CTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Base64Codec13Test.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/MurmurHash3.java	['MurmurHashFuzzer']	['MurmurHashFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/language/Caverphone2.java	[]	[]
/src/HmacUtilsFuzzer.java	['HmacUtilsFuzzer']	['HmacUtilsFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/Apr1CryptTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/LanguageGuessingTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/Blake3Test.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/MurmurHash2.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/MetaphoneTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/BaseNTestData.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/Resources.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/Base64.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/ResourcesTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/net/URLCodecTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/BaseNCodecOutputStream.java	[]	[]
/src/NetCodecFuzzer.java	['NetCodecFuzzer']	['NetCodecFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/language/bm/Lang.java	['PhoneticEngineFuzzer', 'LanguageStringEncoderFuzzer']	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/XXHash32Test.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/DoubleMetaphone.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/net/QCodec.java	['NetCodecFuzzer']	['NetCodecFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/Charsets.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/cli/DigestTest.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/B64.java	['CryptFuzzer']	['CryptFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/DecoderExceptionTest.java	[]	[]
/src/CryptFuzzer.java	['CryptFuzzer']	['CryptFuzzer']
/src/LanguageStringEncoderFuzzer.java	['LanguageStringEncoderFuzzer']	['LanguageStringEncoderFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/Codec105ErrorInputStream.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/B64Test.java	[]	[]
/src/commons-codec/src/main/java/org/apache/commons/codec/language/AbstractCaverphone.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/BeiderMorseEncoderTest.java	[]	[]
/src/DigestUtilsFuzzer.java	['DigestUtilsFuzzer']	['DigestUtilsFuzzer']
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/Hex.java	['HmacUtilsFuzzer']	['HmacUtilsFuzzer']
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/RuleTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/HmacUtilsTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/XXHash32OverflowTest.java	[]	[]
/src/commons-codec/src/test/java/org/apache/commons/codec/language/DoubleMetaphoneTest.java	[]	[]

Directories in report

Directory
/src/commons-codec/src/test/java/org/apache/commons/codec/digest/
/src/commons-codec/src/main/java/org/apache/commons/codec/net/
/src/commons-codec/src/main/java/org/apache/commons/codec/digest/
/src/commons-codec/src/test/java/org/apache/commons/codec/language/bm/
/src/
/src/commons-codec/src/test/java/org/apache/commons/codec/
/src/commons-codec/src/test/java/org/apache/commons/codec/cli/
/src/commons-codec/src/test/java/org/apache/commons/codec/binary/
/src/commons-codec/src/main/java/org/apache/commons/codec/cli/
/src/commons-codec/src/test/java/org/apache/commons/codec/net/
/src/commons-codec/src/main/java/org/apache/commons/codec/
/src/commons-codec/src/main/java/org/apache/commons/codec/binary/
/src/commons-codec/src/main/java/org/apache/commons/codec/language/
/src/commons-codec/src/main/java/org/apache/commons/codec/language/bm/
/src/commons-codec/src/test/java/org/apache/commons/codec/language/

This section shows a list of 3rd party function calls and their relative coverage information. By static analysis of the target project code, all of the 3rd party function call and their caller information, including the source file and line number that initiate the call are captured. The caller source code file and line number are shown in column 2 while column 1 is the function name of the 3rd party function call. Each occurrent of the 3rd party function call will occuply a separate row. Column 3 of each row indicate if the 3rd party call in the source file line is unreachable. Column 4 lists all fuzzers that have covered that particular system call in that specific location (source file and line)during their dynamic fuzzing.

Function in each files in report

Target sink	Callsite location	Reached by fuzzer	Covered by Fuzzers