【fuzz】heap-buffer-overflow

[zhangtaoXT5]

1、python infra/helper.py build_fuzzers --sanitizer address hiredis
2、python infra/helper.py run_fuzzer hiredis format_command_fuzzer -rss_limit_mb=0

==13==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x602000024715 at pc 0x00000054f1bb bp 0x7ffc63cf1490 sp 0x7ffc63cf1488
READ of size 1 at 0x602000024715 thread T0
SCARINESS: 12 (1-byte-read-heap-buffer-overflow)
#0 0x54f1ba in redisvFormatCommand /src/hiredis/hiredis.c:231:11
#1 0x54f45e in redisFormatCommand /src/hiredis/hiredis.c:460:11
#2 0x54d599 in LLVMFuzzerTestOneInput /src/hiredis/format_command_fuzzer.c:51:5
#3 0x458241 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:556:15
#4 0x457985 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool*) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:470:3
#5 0x459a57 in fuzzer::Fuzzer::MutateAndTestOne() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:698:19
#6 0x45a4d5 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, fuzzer::fuzzer_allocatorfuzzer::SizedFile >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:832:5
#7 0x4494ae in fuzzer::FuzzerDriver(int*, char***, int ()(unsigned char const, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:826:6
#8 0x471c82 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:19:10
#9 0x7ff76646882f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#10 0x41dbb8 in _start (/out/format_command_fuzzer+0x41dbb8)

0x602000024715 is located 0 bytes to the right of 5-byte region [0x602000024710,0x602000024715)
allocated by thread T0 here:
#0 0x51d8fd in malloc /src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3
#1 0x54d54a in LLVMFuzzerTestOneInput /src/hiredis/format_command_fuzzer.c:44:15
#2 0x458241 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:556:15
#3 0x457985 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool*) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:470:3
#4 0x459a57 in fuzzer::Fuzzer::MutateAndTestOne() /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:698:19
#5 0x45a4d5 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, fuzzer::fuzzer_allocatorfuzzer::SizedFile >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:832:5
#6 0x4494ae in fuzzer::FuzzerDriver(int*, char***, int ()(unsigned char const, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:826:6
#7 0x471c82 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:19:10
#8 0x7ff76646882f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
SUMMARY: AddressSanitizer: heap-buffer-overflow /src/hiredis/hiredis.c:231:11 in redisvFormatCommand
Shadow bytes around the buggy address:
0x0c047fffc890: fa fa fd fa fa fa fd fa fa fa fd fd fa fa fd fd
0x0c047fffc8a0: fa fa fd fa fa fa fd fa fa fa fd fd fa fa fd fd
0x0c047fffc8b0: fa fa fd fa fa fa fd fd fa fa fd fd fa fa fd fd
0x0c047fffc8c0: fa fa fd fa fa fa fd fa fa fa fd fd fa fa fd fd
0x0c047fffc8d0: fa fa fd fa fa fa fd fd fa fa fd fd fa fa 04 fa
=>0x0c047fffc8e0: fa fa[05]fa fa fa fd fd fa fa 00 03 fa fa 00 fa
0x0c047fffc8f0: fa fa 00 01 fa fa fd fd fa fa fa fa fa fa fa fa
0x0c047fffc900: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fffc910: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fffc920: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fffc930: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
==13==ABORTING
MS: 4 InsertByte-ChangeByte-CopyPart-CrossOver-; base unit: 3b14a47b85ca3137afa69b9a883507a1bb29eeb8
0x23,0x20,0x25,0x20,

%

artifact_prefix='./'; Test unit written to ./crash-9178db74f1ab7d2b70b823088539af55ad353c9d