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setup/fuzz - AddressSanitizer: heap-use-after-free /__w/onefuzz-notification/onefuzz-notification/simple-libfuzzer/simple.c:48:51 in LLVMFuzzerTestOneInput #5

Open mrragava opened 3 years ago

mrragava commented 3 years ago

Files

Repro

onefuzz --endpoint https://oefuzzingtest2instance.azurewebsites.net repro create_and_connect oft-unique-reports-032590c6e8ea524cb32942a29c898a62 d2e1637cef455f5f82686d72b90ab419709a0105938b8e4d9c92c8136732ff8a.json

Call Stack

#1 0x42e9f7 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x42e9f7)
#2 0x41ee8a in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41ee8a)
#3 0x429e50 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x429e50)
#4 0x41cb52 in main (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41cb52)
#5 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
#6 0x41cbc9 in _start (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41cbc9)

ASAN Log

INFO: Loaded 1 modules   (21 inline 8-bit counters): 21 [0x788fb0, 0x788fc5), 
INFO: Loaded 1 PC tables (21 PCs): 21 [0x5664c8,0x566618), 
setup/fuzz: Running 1 inputs 1 time(s) each.
Running: /tmp/.tmps810lI/crash-cbe07cd3ebaba15610ecd968c4e4a04c6643e534
=================================================================
==6611==ERROR: AddressSanitizer: heap-use-after-free on address 0x602000000050 at pc 0x00000054af70 bp 0x7fffffffcff0 sp 0x7fffffffcfe8
WRITE of size 4 at 0x602000000050 thread T0
    #0 0x54af6f in LLVMFuzzerTestOneInput /__w/onefuzz-notification/onefuzz-notification/simple-libfuzzer/simple.c:48:51
    #1 0x42e9f7 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x42e9f7)
    #2 0x41ee8a in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41ee8a)
    #3 0x429e50 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x429e50)
    #4 0x41cb52 in main (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41cb52)
    #5 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
    #6 0x41cbc9 in _start (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41cbc9)

0x602000000050 is located 0 bytes inside of 4-byte region [0x602000000050,0x602000000054)
freed by thread T0 here:
    #0 0x511f10 in free (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x511f10)
    #1 0x54af29 in LLVMFuzzerTestOneInput /__w/onefuzz-notification/onefuzz-notification/simple-libfuzzer/simple.c:48:39
    #2 0x42e9f7 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x42e9f7)
    #3 0x41ee8a in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41ee8a)
    #4 0x429e50 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x429e50)
    #5 0x41cb52 in main (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41cb52)
    #6 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310

previously allocated by thread T0 here:
    #0 0x5120e0 in malloc (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x5120e0)
    #1 0x54af13 in LLVMFuzzerTestOneInput /__w/onefuzz-notification/onefuzz-notification/simple-libfuzzer/simple.c:48:18
    #2 0x42e9f7 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x42e9f7)
    #3 0x41ee8a in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41ee8a)
    #4 0x429e50 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x429e50)
    #5 0x41cb52 in main (/onefuzz/blob-containers/fuzz3rpz7enxyexcq/fuzz+0x41cb52)
    #6 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310

SUMMARY: AddressSanitizer: heap-use-after-free /__w/onefuzz-notification/onefuzz-notification/simple-libfuzzer/simple.c:48:51 in LLVMFuzzerTestOneInput
Shadow bytes around the buggy address:
  0x0c047fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c047fff8000: fa fa 04 fa fa fa 04 fa fa fa[fd]fa fa fa fa fa
  0x0c047fff8010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8050: 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
==6611==ABORTING
mrragava commented 3 years ago

Duplicate found.

mrragava commented 3 years ago

Duplicate found.

mrragava commented 3 years ago

Duplicate found.