From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Korsgaard Date: Thu, 30 Mar 2017 23:03:34 +0200 Subject: [Buildroot] [PATCH 4/5] audiofile: add security patch for CVE-2017-6831 In-Reply-To: <20170330210335.16858-1-peter@korsgaard.com> References: <20170330210335.16858-1-peter@korsgaard.com> Message-ID: <20170330210335.16858-4-peter@korsgaard.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Heap-based buffer overflow in the decodeBlockWAVE function in IMA.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-imadecodeblockwave-ima-cpp https://github.com/mpruett/audiofile/issues/35 Signed-off-by: Peter Korsgaard --- ...lly-fail-when-error-occurs-in-parseFormat.patch | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 package/audiofile/0006-Actually-fail-when-error-occurs-in-parseFormat.patch diff --git a/package/audiofile/0006-Actually-fail-when-error-occurs-in-parseFormat.patch b/package/audiofile/0006-Actually-fail-when-error-occurs-in-parseFormat.patch new file mode 100644 index 000000000..0c6be2a2c --- /dev/null +++ b/package/audiofile/0006-Actually-fail-when-error-occurs-in-parseFormat.patch @@ -0,0 +1,42 @@ +From a2e9eab8ea87c4ffc494d839ebb4ea145eb9f2e6 Mon Sep 17 00:00:00 2001 +From: Antonio Larrosa +Date: Mon, 6 Mar 2017 18:59:26 +0100 +Subject: [PATCH] Actually fail when error occurs in parseFormat + +When there's an unsupported number of bits per sample or an invalid +number of samples per block, don't only print an error message using +the error handler, but actually stop parsing the file. + +This fixes #35 (also reported at +https://bugzilla.opensuse.org/show_bug.cgi?id=1026983 and +https://blogs.gentoo.org/ago/2017/02/20/audiofile-heap-based-buffer-overflow-in-imadecodeblockwave-ima-cpp/ +) + +Signed-off-by: Peter Korsgaard +--- + libaudiofile/WAVE.cpp | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/libaudiofile/WAVE.cpp b/libaudiofile/WAVE.cpp +index 0e81cf7..d762249 100644 +--- a/libaudiofile/WAVE.cpp ++++ b/libaudiofile/WAVE.cpp +@@ -326,6 +326,7 @@ status WAVEFile::parseFormat(const Tag &id, uint32_t size) + { + _af_error(AF_BAD_NOT_IMPLEMENTED, + "IMA ADPCM compression supports only 4 bits per sample"); ++ return AF_FAIL; + } + + int bytesPerBlock = (samplesPerBlock + 14) / 8 * 4 * channelCount; +@@ -333,6 +334,7 @@ status WAVEFile::parseFormat(const Tag &id, uint32_t size) + { + _af_error(AF_BAD_CODEC_CONFIG, + "Invalid samples per block for IMA ADPCM compression"); ++ return AF_FAIL; + } + + track->f.sampleWidth = 16; +-- +2.11.0 + -- 2.11.0