Add fuzz target for ruby gems #8
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jhawthorn
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jhawthorn
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cc @oliverchang @alan32liu after google#9100 and google#8448 After compiling locally, I can see that `./SystemSan ./target_dns -dict=vuln.dict` crashes in a few seconds with ``` ===BUG DETECTED: Arbitrary domain name resolution=== ===Domain resolved: .f.z=== ===DNS request type: 0, class: 256=== ==315== ERROR: libFuzzer: deadly signal #0 0x539131 in __sanitizer_print_stack_trace /src/llvm-project/compiler-rt/lib/asan/asan_stack.cpp:87:3 #1 0x457c48 in fuzzer::PrintStackTrace() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerUtil.cpp:210:5 #2 0x43c923 in fuzzer::Fuzzer::CrashCallback() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:233:3 #3 0x7fa57940041f (/lib/x86_64-linux-gnu/libpthread.so.0+0x1441f) (BuildId: 7b4536f41cdaa5888408e82d0836e33dcf436466) #4 0x7fa5793ff7db in send (/lib/x86_64-linux-gnu/libpthread.so.0+0x137db) (BuildId: 7b4536f41cdaa5888408e82d0836e33dcf436466) #5 0x503ba4 in __interceptor_send /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:6802:17 #6 0x7fa578abf462 (/lib/x86_64-linux-gnu/libresolv.so.2+0xb462) (BuildId: 4519041bde5b859c55798ac0745b0b6199cb7d94) #7 0x7fa578abbc43 in __res_context_query (/lib/x86_64-linux-gnu/libresolv.so.2+0x7c43) (BuildId: 4519041bde5b859c55798ac0745b0b6199cb7d94) #8 0x7fa578abc8ed in __res_context_search (/lib/x86_64-linux-gnu/libresolv.so.2+0x88ed) (BuildId: 4519041bde5b859c55798ac0745b0b6199cb7d94) #9 0x7fa578ad2cc1 (/lib/x86_64-linux-gnu/libnss_dns.so.2+0x2cc1) (BuildId: 3fac4ec397ba8e8938fe298f103113f315465130) #10 0x7fa578ad2e8b in _nss_dns_gethostbyname3_r (/lib/x86_64-linux-gnu/libnss_dns.so.2+0x2e8b) (BuildId: 3fac4ec397ba8e8938fe298f103113f315465130) google#11 0x7fa578ad2f41 in _nss_dns_gethostbyname2_r (/lib/x86_64-linux-gnu/libnss_dns.so.2+0x2f41) (BuildId: 3fac4ec397ba8e8938fe298f103113f315465130) google#12 0x7fa5792fdc9d in gethostbyname2_r (/lib/x86_64-linux-gnu/libc.so.6+0x130c9d) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee) google#13 0x7fa5792d179e (/lib/x86_64-linux-gnu/libc.so.6+0x10479e) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee) google#14 0x7fa5792d2f58 in getaddrinfo (/lib/x86_64-linux-gnu/libc.so.6+0x105f58) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee) google#15 0x4d93ac in getaddrinfo /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:2667:13 google#16 0x56c8d9 in LLVMFuzzerTestOneInput /out/SystemSan/target_dns.cpp:35:11 google#17 0x43dec3 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15 google#18 0x43d6aa in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool, bool*) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:514:3 google#19 0x43ed79 in fuzzer::Fuzzer::MutateAndTestOne() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:757:19 google#20 0x43fa45 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:895:5 google#21 0x42edaf in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:912:6 google#22 0x458402 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10 google#23 0x7fa5791f1082 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24082) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee) google#24 0x41f7ed in _start (/out/SystemSan/target_dns+0x41f7ed) NOTE: libFuzzer has rudimentary signal handlers. Combine libFuzzer with AddressSanitizer or similar for better crash reports. SUMMARY: libFuzzer: deadly signal MS: 2 CrossOver-ManualDict- DE: "f.z"-; base unit: ac3478d69a3c81fa62e60f5c3696165a4e5e6ac4 0x66,0x2e,0x7a, f.z artifact_prefix='./'; Test unit written to ./crash-926813b2d6adde373f96a10594a5314951588384 Base64: Zi56 ``` You can also try ``` echo -n f.z > toto ./SystemSan ./target_dns toto ``` Co-authored-by: Oliver Chang <[email protected]> Co-authored-by: jonathanmetzman <[email protected]>
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