audiofile: add security patch for CVE-2017-6827 / CVE-2017-6828 / CVE-2017-6832 / CVE-2017-6833 / CVE-2017-6835 / CVE-2017-6837
CVE-2017-6827: A heap-based buffer overflow in the MSADPCM::initializeCoefficients function in MSADPCM.cpp in audiofile (aka libaudiofile and Audio File Library) 0.3.6 allows remote attackers to have unspecified impact via a crafted audio file. https://blogs.gentoo.org/ago/2017/02/20/audiofile-heap-based-buffer-overflow-in-msadpcminitializecoefficients-msadpcm-cpp https://github.com/mpruett/audiofile/issues/32 CVE-2017-6828: A Heap-based buffer overflow in the readValue function in FileHandle.cpp in audiofile (aka libaudiofile and Audio File Library) 0.3.6 allows remote attackers to have unspecified impact via a crafted WAV file. https://blogs.gentoo.org/ago/2017/02/20/audiofile-heap-based-buffer-overflow-in-readvalue-filehandle-cpp https://github.com/mpruett/audiofile/issues/31 CVE-2017-6832: A Heap-based buffer overflow in the decodeBlock in MSADPCM.cpp in Audio File Library (aka audiofile) 0.3.6 allows remote attackers to cause a denial of service (crash) via a crafted file. https://blogs.gentoo.org/ago/2017/02/20/audiofile-heap-based-buffer-overflow-in-msadpcmdecodeblock-msadpcm-cpp https://github.com/mpruett/audiofile/issues/36 CVE-2017-6833: The runPull function in libaudiofile/modules/BlockCodec.cpp in Audio File Library (aka audiofile) 0.3.6 allows remote attackers to cause a denial of service (divide-by-zero error and crash) via a crafted file. https://blogs.gentoo.org/ago/2017/02/20/audiofile-divide-by-zero-in-blockcodecrunpull-blockcodec-cpp https://github.com/mpruett/audiofile/issues/37 CVE-2017-6835: The reset1 function in libaudiofile/modules/BlockCodec.cpp in Audio File Library (aka audiofile) 0.3.6 allows remote attackers to cause a denial of service (divide-by-zero error and crash) via a crafted file. https://blogs.gentoo.org/ago/2017/02/20/audiofile-divide-by-zero-in-blockcodecreset1-blockcodec-cpp https://github.com/mpruett/audiofile/issues/39 CVE-2017-6837: WAVE.cpp in Audio File Library (aka audiofile) 0.3.6 allows remote attackers to cause a denial of service (crash) via vectors related to a large number of coefficients. http://blogs.gentoo.org/ago/2017/02/20/audiofile-multiple-ubsan-crashes/ https://github.com/mpruett/audiofile/issues/41 Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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From c48e4c6503f7dabd41f11d4c9c7b7f8960e7f2c0 Mon Sep 17 00:00:00 2001
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From: Antonio Larrosa <larrosa@kde.org>
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Date: Mon, 6 Mar 2017 12:51:22 +0100
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Subject: [PATCH] Always check the number of coefficients
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When building the library with NDEBUG, asserts are eliminated
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so it's better to always check that the number of coefficients
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is inside the array range.
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This fixes the 00191-audiofile-indexoob issue in #41
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Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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---
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libaudiofile/WAVE.cpp | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/libaudiofile/WAVE.cpp b/libaudiofile/WAVE.cpp
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index 0e81cf7..61f9541 100644
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--- a/libaudiofile/WAVE.cpp
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+++ b/libaudiofile/WAVE.cpp
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@@ -281,6 +281,12 @@ status WAVEFile::parseFormat(const Tag &id, uint32_t size)
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/* numCoefficients should be at least 7. */
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assert(numCoefficients >= 7 && numCoefficients <= 255);
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+ if (numCoefficients < 7 || numCoefficients > 255)
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+ {
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+ _af_error(AF_BAD_HEADER,
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+ "Bad number of coefficients");
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+ return AF_FAIL;
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+ }
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m_msadpcmNumCoefficients = numCoefficients;
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--
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2.11.0
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