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Add json fuzzer with seed files from #1123 and test suite 

...as well as some cases generated in CI from earlier attempts at
fixing this.
This commit is contained in:
Jay Berkenbilt 2024-02-04 16:00:36 -05:00
parent cb0f390cc1
commit f0fb19df9d
43 changed files with 17094 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.github/workflows/cifuzz.yml vendored
View File

@ -24,7 +24,7 @@ jobs:
fuzz-seconds: 600
dry-run: false
- name: Upload Crash
uses: actions/upload-artifact@v3
uses: actions/upload-artifact@v4
if: failure()
with:
name: artifacts

4
ChangeLog
View File

@ -1,3 +1,7 @@
2024-02-03 Jay Berkenbilt <ejb@ql.org>
* Add fuzz testing for JSON.
2024-01-15 Jay Berkenbilt <ejb@ql.org>
* Add JSON::getDictItem (from m-holger)

1
TODO.md
View File

@ -29,7 +29,6 @@ Always
Next
====
* Consider adding fuzzer code for JSON
* Add some additional code coverage analysis to CI
* Spell check: Have the spell-check script synchronize cSpell.json with .idea/dictionaries/qpdf.xml,
which should be set to the union of all the validated user dictionaries.

1
fuzz/CMakeLists.txt
View File

@ -7,6 +7,7 @@ set(FUZZERS
dct_fuzzer
flate_fuzzer
hex_fuzzer
json_fuzzer
lzw_fuzzer
pngpredictor_fuzzer
runlength_fuzzer

57
fuzz/json_fuzzer.cc Normal file
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@ -0,0 +1,57 @@
#include "qpdf/JSON.hh"
#include "qpdf/QPDF.hh"
#include <qpdf/BufferInputSource.hh>
#include <qpdf/Pl_Discard.hh>
#include <iostream>
#include <stdexcept>
class FuzzHelper
{
public:
FuzzHelper(unsigned char const* data, size_t size);
void run();
private:
void doChecks();
unsigned char const* data;
size_t size;
};
FuzzHelper::FuzzHelper(unsigned char const* data, size_t size) :
data(data),
size(size)
{
}
void
FuzzHelper::doChecks()
{
try {
JSON::parse(std::string(reinterpret_cast<char const*>(data), size));
} catch (std::runtime_error& e) {
std::cerr << "runtime_error parsing json: " << e.what() << std::endl;
}
QPDF q;
Buffer buf(const_cast<unsigned char*>(data), size);
auto is = std::make_shared<BufferInputSource>("json", &buf);
q.createFromJSON(is);
}
void
FuzzHelper::run()
{
try {
doChecks();
} catch (std::runtime_error const& e) {
std::cerr << "runtime_error: " << e.what() << std::endl;
}
}
extern "C" int
LLVMFuzzerTestOneInput(unsigned char const* data, size_t size)
{
FuzzHelper f(data, size);
f.run();
return 0;
}

68
fuzz/json_fuzzer_seed_corpus/0ef0e46bb51bec0ec890e989905a9ddfdc55327e Normal file
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@ -0,0 +1,68 @@
{
"qpdf": [
{
"jsonversion": 2,
"pdfversion": "1.3",
"maxobjectid": 6
},
{
"obj:1 0 R": {
"value": {
"/Pages": "2 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Count": 1,
"/Kids": [
"3 0 R"
],
"/Type": "/Pages"
}
},
"obj:3 0 R": {
"value": {
"/Contents": "4 0 R",
"/MediaBox": [
0,
0,
612,
792
],
"/Parent": "2 0 R",
"/Resources": {
"/Font": {
"/F1": "6 0 R"
},
"/ProcSet": "5 0 R"
},
"/Type": "/Page"
}
},
"obj:4 0 R": {
"stream": {
"data": "QlQKICAvRjEgMjQgVGYKICA3MiA3MjAgVGQKICAoUG90YXRvKSBUagpFVAo=",
"dict": {}
}
},
"obj:5 0 R": {
"value": [
"/PDF",
"/Text"
]
},
"obj:6 0 R": {
"value": {
"/BaseFont": "/Helvetica",
"/Encoding": "/WinAnsiEncoding",
"/Subtype": "/Type1",
"/Type": "/Font"
}
},
"trailer": {
"stream": {}
}
}
]
}

71
fuzz/json_fuzzer_seed_corpus/16d5cbbc57b30d61b7382a334b777596035cb9ed Normal file
View File

@ -0,0 +1,71 @@
{
"qpdf": [
{
"jsonversion": "quack",
"pdfversion": "potato",
"maxobjectid": 6
},
{
"obj:1 0 R": {
"value": {
"/Pages": "2 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Count": 1,
"/Kids": [
"3 0 R"
],
"/Type": "/Pages"
}
},
"obj:3 0 R": {
"value": {
"/Contents": "4 0 R",
"/MediaBox": [
0,
0,
612,
792
],
"/Parent": "2 0 R",
"/Resources": {
"/Font": {
"/F1": "6 0 R"
},
"/ProcSet": "5 0 R"
},
"/Type": "/Page"
}
},
"obj:4 0 R": {
"stream": {
"data": "QlQKICAvRjEgMjQgVGYKICA3MiA3MjAgVGQKICAoUG90YXRvKSBUagpFVAo=",
"dict": {}
}
},
"obj:5 0 R": {
"value": [
"/PDF",
"/Text"
]
},
"obj:6 0 R": {
"value": {
"/BaseFont": "/Helvetica",
"/Encoding": "/WinAnsiEncoding",
"/Subtype": "/Type1",
"/Type": "/Font"
}
},
"trailer": {
"value": {
"/Root": "1 0 R",
"/Size": 7
}
}
}
]
}

76
fuzz/json_fuzzer_seed_corpus/17373dd41d35412356114b8e7a6cecdbe89d6d89 Normal file
View File

@ -0,0 +1,76 @@
{
"qpdf": [
{
"jsonversion": 2,
"pdfversion": "1.3",
"pushedinheritedpageresources": false,
"calledgetallpages": false,
"maxobjectid": 6
},
{
"obj:1 0 R": {
"value": {
"/Pages": "2 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Count": 1,
"/Kids": [
"3 0 R"
],
"/Type": "/Pages"
}
},
"obj:3 0 R": {
"value": {
"/Contents": "4 0 R",
"/MediaBox": [
0,
0,
612,
792
],
"/Parent": "2 0 R",
"/Resources": {
"/Font": {
"/F1": "6 0 R"
},
"/ProcSet": "5 0 R"
},
"/Type": "/Page"
}
},
"obj:4 0 R": {
"stream": {
"data": "QlQKICAvRjEgMjQgVGYKICA3MiA3MjAgVGQKICAoUG90YXRvKSBUagpFVAo=",
"dict": {}
}
},
"obj:5 0 R": {
"value": [
"/PDF",
"/Text"
]
},
"obj:6 0 R": {
"value": {
"/BaseFont": "/Helvetica",
"/Encoding": "/WinAnsiEncoding",
"/Name": "/F1",
"/Subtype": "/Type1",
"/Type": "/Font"
}
},
"trailer": {
"value": {
"/QTest": "u:¡Hola!",
"/Root": "1 0 R",
"/Size": 7,
"/Z": "b:279e79d4051fe36af8d7b8425e510a8b39940d447c6be3a24a5a6d3abd6c99025c"
}
}
}
]
}

75
fuzz/json_fuzzer_seed_corpus/1b1de479ae46080fd3a2d5c064fb6c1307022235 Normal file
View File

@ -0,0 +1,75 @@
{
"qpdf": [
{
"jsonversion": 2,
"pdfversion": "1.3",
"pushedinheritedpageresources": false,
"calledgetallpages": false,
"maxobjectid": 6
},
{
"obj:1 0 R": {
"value": {
"/Pages": "2 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Count": 1,
"/Kids": [
"3 0 R"
],
"/Type": "/Pages"
}
},
"obj:3 0 R": {
"value": {
"/Contents": "4 0 R",
"/MediaBox": [
0,
0,
612,
792
],
"/Parent": "2 0 R",
"/Resources": {
"/Font": {
"/F1": "6 0 R"
},
"/ProcSet": "5 0 R"
},
"/Type": "/Page"
}
},
"obj:4 0 R": {
"stream": {
"data": "CkJUCi9GMSAyNCBUZg03MiA3MjAgVGQgDQogKFBvdGF0bykgVGogDUVUIAo=",
"dict": {}
}
},
"obj:5 0 R": {
"value": [
"/PDF",
"/Text"
]
},
"obj:6 0 R": {
"value": {
"/BaseFont": "/Helvetica",
"/Encoding": "/WinAnsiEncoding",
"/Name": "/F1",
"/Subtype": "/Type1",
"/Type": "/Font"
}
},
"trailer": {
"value": {
"/QTest": "/oink",
"/Root": "1 0 R",
"/Size": 7
}
}
}
]
}

73
fuzz/json_fuzzer_seed_corpus/2269ff1ceb41567ab84171200888c484ef8cceb3 Normal file
View File

@ -0,0 +1,73 @@
{
"qpdf": [
{
"jsonversion": 850,
"pdfversion": [],
"calledgetallpages": 3,
"pushedinheritedpageresources": "potato",
"maxobjectid": 6
},
{
"obj:1 0 R": {
"value": {
"/Pages": "2 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Count": 1,
"/Kids": [
"3 0 R"
],
"/Type": "/Pages"
}
},
"obj:3 0 R": {
"value": {
"/Contents": "4 0 R",
"/MediaBox": [
0,
0,
612,
792
],
"/Parent": "2 0 R",
"/Resources": {
"/Font": {
"/F1": "6 0 R"
},
"/ProcSet": "5 0 R"
},
"/Type": "/Page"
}
},
"obj:4 0 R": {
"stream": {
"data": "QlQKICAvRjEgMjQgVGYKICA3MiA3MjAgVGQKICAoUG90YXRvKSBUagpFVAo=",
"dict": {}
}
},
"obj:5 0 R": {
"value": [
"/PDF",
"/Text"
]
},
"obj:6 0 R": {
"value": {
"/BaseFont": "/Helvetica",
"/Encoding": "/WinAnsiEncoding",
"/Subtype": "/Type1",
"/Type": "/Font"
}
},
"trailer": {
"value": {
"/Root": "1 0 R",
"/Size": 7
}
}
}
]
}

73
fuzz/json_fuzzer_seed_corpus/24553d55492862de81347f35fb213c9919403c6f Normal file
View File

@ -0,0 +1,73 @@
{
"qpdf": [
{
"jsonversion": 2,
"pdfversion": "1.3",
"maxobjectid": 6
},
{
"potato": {
},
"obj:1 0 R": {
"value": {
"/Pages": "2 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Count": 1,
"/Kids": [
"3 0 R"
],
"/Type": "/Pages"
}
},
"obj:3 0 R": {
"value": {
"/Contents": "4 0 R",
"/MediaBox": [
0,
0,
612,
792
],
"/Parent": "2 0 R",
"/Resources": {
"/Font": {
"/F1": "6 0 R"
},
"/ProcSet": "5 0 R"
},
"/Type": "/Page"
}
},
"obj:4 0 R": {
"stream": {
"data": "QlQKICAvRjEgMjQgVGYKICA3MiA3MjAgVGQKICAoUG90YXRvKSBUagpFVAo=",
"dict": {}
}
},
"obj:5 0 R": {
"value": [
"/PDF",
"/Text"
]
},
"obj:6 0 R": {
"value": {
"/BaseFont": "/Helvetica",
"/Encoding": "/WinAnsiEncoding",
"/Subtype": "/Type1",
"/Type": "/Font"
}
},
"trailer": {
"value": {
"/Root": "1 0 R",
"/Size": 7
}
}
}
]
}

71
fuzz/json_fuzzer_seed_corpus/24ed0a60ac00096d5580f1610b7b6ac07a2b2bb5 Normal file
View File

@ -0,0 +1,71 @@
{
"qpdf": [
{
"jsonversion": 2,
"pdfversion": "1.3",
"maxobjectid": 6
},
{
"obj:1 0 R": {
"value": {
"/Pages": "2 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Count": 1,
"/Kids": [
"3 0 R"
],
"/Type": "/Pages"
}
},
"obj:3 0 R": {
"value": {
"/Contents": ["4 0 R", "7 0 R"],
"/MediaBox": [
0,
0,
612,
792
],
"/Parent": "2 0 R",
"/Resources": {
"/Font": {
"/F1": "6 0 R"
},
"/ProcSet": "5 0 R"
},
"/Type": "/Page"
}
},
"obj:4 0 R": {
"stream": {
"datafile": [[]],
"dict": {}
}
},
"obj:5 0 R": {
"value": [
"/PDF",
"/Text"
]
},
"obj:6 0 R": {
"value": {
"/BaseFont": "/Helvetica",
"/Encoding": "/WinAnsiEncoding",
"/Subtype": "/Type1",
"/Type": "/Font"
}
},
"trailer": {
"value": {
"/Root": "1 0 R",
"/Size": 7
}
}
}
]
}

695
fuzz/json_fuzzer_seed_corpus/28f697cab47c193f27469643f935b62442b7fb89 Normal file
View File

@ -0,0 +1,695 @@
{
"qpdf": [
{
"jsonversion": 2,
"pdfversion": "1.6",
"pushedinheritedpageresources": false,
"calledgetallpages": false,
"maxobjectid": 52
},
{
"obj:1 0 R": {
"value": {
"/AcroForm": {
"/DR": "2 0 R",
"/Fields": [
"3 0 R",
"4 0 R",
"5 0 R"
]
},
"/Names": {
"/EmbeddedFiles": "6 0 R"
},
"/Pages": "7 0 R",
"/Type": "/Catalog"
}
},
"obj:2 0 R": {
"value": {
"/Font": {
"/F1": "8 0 R"
}
}
},
"obj:3 0 R": {
"value": {
"/AP": {
"/N": "9 0 R"
},
"/DA": "u:0 0.4 0 rg /F1 18 Tf",
"/DR": "2 0 R",
"/DV": "u:",
"/FT": "/Tx",
"/Ff": 0,
"/Rect": [
72,
470.774,
190.8,
484.922
],
"/Subtype": "/Widget",
"/T": "u:Text Box 1",
"/Type": "/Annot",
"/V": "u:Formy field"
}
},
"obj:4 0 R": {
"value": {
"/AP": {
"/N": "11 0 R"
},
"/DA": "u:0 0.4 0 rg /F1 18 Tf",
"/DR": "2 0 R",
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"/FT": "/Tx",
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],
"/Subtype": "/Widget",
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"/V": "u:Rot-ccw field"
}
},
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"/FT": "/Btn",
"/Ff": 49152,
"/Kids": [
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],
"/T": "u:r1",
"/V": "/2"
}
},
"obj:6 0 R": {
"value": {
"/Names": [
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]
}
},
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"/Kids": [
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],
"/Type": "/Pages"
}
},
"obj:8 0 R": {
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"/BaseFont": "/Courier",
"/Encoding": "/WinAnsiEncoding",
"/Subtype": "/Type1",
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}
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"/MK": {
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}
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],
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}
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}

1
fuzz/qtest/fuzz.test
View File

@ -16,6 +16,7 @@ my @fuzzers = (
['dct' => 1],
['flate' => 1],
['hex' => 1],
['json' => 37],
['lzw' => 2],
['pngpredictor' => 1],
['runlength' => 6],