From: Jackie Huang <jackie.hu...@windriver.com> Backport the patch to fix CVE-2017-8362:
The flac_buffer_copy function in flac.c in libsndfile 1.0.28 allows remote attackers to cause a denial of service (invalid read and application crash) via a crafted audio file. Reference: https://nvd.nist.gov/vuln/detail/CVE-2017-8362 Signed-off-by: Jackie Huang <jackie.hu...@windriver.com> --- .../libsndfile/libsndfile1/CVE-2017-8362.patch | 59 ++++++++++++++++++++++ .../libsndfile/libsndfile1_1.0.28.bb | 1 + 2 files changed, 60 insertions(+) create mode 100644 meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-8362.patch diff --git a/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-8362.patch b/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-8362.patch new file mode 100644 index 0000000000..9ee7e46a6d --- /dev/null +++ b/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2017-8362.patch @@ -0,0 +1,59 @@ +From ef1dbb2df1c0e741486646de40bd638a9c4cd808 Mon Sep 17 00:00:00 2001 +From: Erik de Castro Lopo <er...@mega-nerd.com> +Date: Fri, 14 Apr 2017 15:19:16 +1000 +Subject: [PATCH] src/flac.c: Fix a buffer read overflow + +A file (generated by a fuzzer) which increased the number of channels +from one frame to the next could cause a read beyond the end of the +buffer provided by libFLAC. Only option is to abort the read. + +Closes: https://github.com/erikd/libsndfile/issues/231 + +CVE: CVE-2017-8362 + +Upstream-Status: Backport [https://github.com/erikd/libsndfile/commit/ef1dbb2df1c0e741486646de40bd638a9c4cd808] + +Signed-off-by: Jackie Huang <jackie.hu...@windriver.com> +--- + src/flac.c | 11 +++++++++-- + 1 file changed, 9 insertions(+), 2 deletions(-) + +diff --git a/src/flac.c b/src/flac.c +index 5a4f8c2..e4f9aaa 100644 +--- a/src/flac.c ++++ b/src/flac.c +@@ -169,6 +169,14 @@ flac_buffer_copy (SF_PRIVATE *psf) + const int32_t* const *buffer = pflac->wbuffer ; + unsigned i = 0, j, offset, channels, len ; + ++ if (psf->sf.channels != (int) frame->header.channels) ++ { psf_log_printf (psf, "Error: FLAC frame changed from %d to %d channels\n" ++ "Nothing to do but to error out.\n" , ++ psf->sf.channels, frame->header.channels) ; ++ psf->error = SFE_FLAC_CHANNEL_COUNT_CHANGED ; ++ return 0 ; ++ } ; ++ + /* + ** frame->header.blocksize is variable and we're using a constant blocksize + ** of FLAC__MAX_BLOCK_SIZE. +@@ -202,7 +210,6 @@ flac_buffer_copy (SF_PRIVATE *psf) + return 0 ; + } ; + +- + len = SF_MIN (pflac->len, frame->header.blocksize) ; + + if (pflac->remain % channels != 0) +@@ -436,7 +443,7 @@ sf_flac_meta_callback (const FLAC__StreamDecoder * UNUSED (decoder), const FLAC_ + { case FLAC__METADATA_TYPE_STREAMINFO : + if (psf->sf.channels > 0 && psf->sf.channels != (int) metadata->data.stream_info.channels) + { psf_log_printf (psf, "Error: FLAC stream changed from %d to %d channels\n" +- "Nothing to be but to error out.\n" , ++ "Nothing to do but to error out.\n" , + psf->sf.channels, metadata->data.stream_info.channels) ; + psf->error = SFE_FLAC_CHANNEL_COUNT_CHANGED ; + return ; +-- +2.7.4 + diff --git a/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb b/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb index f80ce2fc99..2bd51b1cd9 100644 --- a/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb +++ b/meta/recipes-multimedia/libsndfile/libsndfile1_1.0.28.bb @@ -8,6 +8,7 @@ LICENSE = "LGPLv2.1" SRC_URI = "http://www.mega-nerd.com/libsndfile/files/libsndfile-${PV}.tar.gz \ file://CVE-2017-6892.patch \ file://CVE-2017-8361-8365.patch \ + file://CVE-2017-8362.patch \ " SRC_URI[md5sum] = "646b5f98ce89ac60cdb060fcd398247c" -- 2.11.0 -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
