166be67407
6338c0203416a5f86e9422b6cd479da8af277f2f tests: Fix fuzzing harness for descriptor parsing (descriptor_parse) (practicalswift)
Pull request description:
Fix bug in the descriptor parsing fuzzing harness (`descriptor_parse`) by making sure `secp256k1_context_verify` is properly initialized (via `ECCVerifyHandle`).
Background:
When fuzzing `Parse(…)` with `libFuzzer` I eventually reached the test case `combo(020000000000000000000000000000000000000000000000000000000000000000)`. That input triggers a call to `CPubKey::IsFullyValid()` which in turns requires an initialized `secp256k1_context_verify`.
The fuzzing harness did not fulfil that pre-condition prior to this commit (sorry, my fault!) :)
Before:
```
$ mkdir descriptors/
$ echo -n 'combo(020000000000000000000000000000000000000000000000000000000000000000)' > descriptors/input
$ UBSAN_OPTIONS="print_stacktrace=1:halt_on_error=1" src/test/fuzz/descriptor_parse -runs=1 descriptors/
…
pubkey.cpp:210:38: runtime error: null pointer passed as argument 1, which is declared to never be null
secp256k1/include/secp256k1.h:305:3: note: nonnull attribute specified here
#0 0x561c032ccf25 in CPubKey::IsFullyValid() const src/pubkey.cpp:210:12
#1 0x561c022139c3 in (anonymous namespace)::ParsePubkeyInner(Span<char const> const&, bool, FlatSigningProvider&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&) src/script/descriptor.cpp:674:24
#2 0x561c02207680 in (anonymous namespace)::ParsePubkey(Span<char const> const&, bool, FlatSigningProvider&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&) src/script/descriptor.cpp:730:42
#3 0x561c0220080e in (anonymous namespace)::ParseScript(Span<char const>&, (anonymous namespace)::ParseScriptContext, FlatSigningProvider&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&) src/script/descriptor.cpp:774:23
#4 0x561c021ffb07 in Parse(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, FlatSigningProvider&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, bool) src/script/descriptor.cpp:994:16
#5 0x561c0218d5d4 in test_one_input(std::vector<unsigned char, std::allocator<unsigned char> > const&) src/test/fuzz/descriptor_parse.cpp:20:9
…
$
```
After:
```
$ mkdir descriptors/
$ echo -n 'combo(020000000000000000000000000000000000000000000000000000000000000000)' > descriptors/input
$ UBSAN_OPTIONS="print_stacktrace=1:halt_on_error=1" src/test/fuzz/descriptor_parse -runs=1 descriptors/
…
Done 2 runs in 0 second(s)
$
```
ACKs for top commit:
paymog:
ACK 6338c0203416a5f86e9422b6cd479da8af277f2f
MarcoFalke:
ACK 6338c0203416a5f86e9422b6cd479da8af277f2f 🕊
Tree-SHA512: bf24c404e1f64183761b057d2f210c3db85277f4415122977c315d7d6835acb5e897b5d64032615e9e44ad4a16dfe857e94481f6e4b57b6dfa8cb37adb2528a5
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| ci | ||
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| depends | ||
| doc | ||
| share | ||
| src | ||
| test | ||
| .cirrus.yml | ||
| .dockerignore | ||
| .editorconfig | ||
| .fuzzbuzz.yml | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
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| .style.yapf | ||
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| autogen.sh | ||
| CMakeLists.txt | ||
| configure.ac | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| INSTALL.md | ||
| libdashconsensus.pc.in | ||
| Makefile.am | ||
| README.md | ||
| SECURITY.md | ||
Dash Core staging tree 18.0
| CI | master | develop |
|---|---|---|
| Gitlab |  |
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