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2.6 KiB
Text
65 lines
No EOL
2.6 KiB
Text
vorbis-tools oggenc vulnerability
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================
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Author : qflb.wu
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===============
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Introduction:
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=============
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The Vorbis Tools package contains command-line tools useful for encoding, playing or editing files using the Ogg CODEC.
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Affected version:
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=====
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1.4.0
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Vulnerability Description:
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==========================
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the wav_open function in oggenc/audio.c in vorbis-tools 1.4.0 can cause a denial of service(memory allocation error) via a crafted wav file.
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./oggenc vorbis-tools_1.4.0_oggenc_memory_allocation_error.wav -o out
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==68126==WARNING: AddressSanitizer failed to allocate 0xffffffffffffbc00 bytes
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==68126==AddressSanitizer's allocator is terminating the process instead of returning 0
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==68126==If you don't like this behavior set allocator_may_return_null=1
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==68126==AddressSanitizer CHECK failed: /build/buildd/llvm-toolchain-3.4-3.4/projects/compiler-rt/lib/sanitizer_common/sanitizer_allocator.cc:149 "((0)) != (0)" (0x0, 0x0)
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#0 0x46d41f in __asan::AsanCheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) (/home/a/Downloads/vorbis-tools-1.4.0/oggenc/oggenc+0x46d41f)
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#1 0x472c81 in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) (/home/a/Downloads/vorbis-tools-1.4.0/oggenc/oggenc+0x472c81)
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#2 0x4719c0 in __sanitizer::AllocatorReturnNull() (/home/a/Downloads/vorbis-tools-1.4.0/oggenc/oggenc+0x4719c0)
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#3 0x4674b6 in __interceptor_malloc (/home/a/Downloads/vorbis-tools-1.4.0/oggenc/oggenc+0x4674b6)
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#4 0x492896 in wav_open /home/a/Downloads/vorbis-tools-1.4.0/oggenc/audio.c:573
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#5 0x496d8e in open_audio_file /home/a/Downloads/vorbis-tools-1.4.0/oggenc/audio.c:86
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#6 0x485d0a in main /home/a/Downloads/vorbis-tools-1.4.0/oggenc/oggenc.c:256
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#7 0x7f6d9f8dcec4 (/lib/x86_64-linux-gnu/libc.so.6+0x21ec4)
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#8 0x47d55c in _start (/home/a/Downloads/vorbis-tools-1.4.0/oggenc/oggenc+0x47d55c)
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-----------------
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wav->channel_permute = malloc(wav->channels * sizeof(int));
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if (wav->channels <= 8)
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/* Where we know the mappings, use them. */
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memcpy(wav->channel_permute, wav_permute_matrix[wav->channels-1],
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sizeof(int) * wav->channels);
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else
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/* Use a default 1-1 mapping */
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for (i=0; i < wav->channels; i++)
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wav->channel_permute[i] = i;
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return 1;
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Andthe code didn't check the return of malloc.
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POC:
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vorbis-tools_1.4.0_oggenc_memory_allocation_error.wav
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CVE:
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CVE-2017-11331
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/42397.zip |