Test ID:	1.3.6.1.4.1.25623.1.0.891611
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-1611-2)
Summary:	The remote host is missing an update for the Debian 'libav' package(s) announced via the DLA-1611-2 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'libav' package(s) announced via the DLA-1611-2 advisory. Vulnerability Insight: Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library. CVE-2014-9317 The decode_ihdr_chunk function in libavcodec/pngdec.c allowed remote attackers to cause a denial of service (out-of-bounds heap access) and possibly had other unspecified impact via an IDAT before an IHDR in a PNG file. The issue got addressed by checking IHDR/IDAT order. CVE-2015-6761 The update_dimensions function in libavcodec/vp8.c in libav relies on a coefficient-partition count during multi-threaded operation, which allowed remote attackers to cause a denial of service (race condition and memory corruption) or possibly have unspecified other impact via a crafted WebM file. This issue has been resolved by using num_coeff_partitions in thread/buffer setup. The variable is not a constant and can lead to race conditions. CVE-2015-6818 The decode_ihdr_chunk function in libavcodec/pngdec.c did not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allowed remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more of these chunks. This has now been fixed by only allowing one IHDR chunk. Multiple IHDR chunks are forbidden in PNG. CVE-2015-6820 The ff_sbr_apply function in libavcodec/aacsbr.c did not check for a matching AAC frame syntax element before proceeding with Spectral Band Replication calculations, which allowed remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted AAC data. This has now been fixed by checking that the element type matches before applying SBR. CVE-2015-6821 The ff_mpv_common_init function in libavcodec/mpegvideo.c did not properly maintain the encoding context, which allowed remote attackers to cause a denial of service (invalid pointer access) or possibly have unspecified other impact via crafted MPEG data. The issue has been resolved by clearing pointers in ff_mpv_common_init(). This ensures that no stale pointers leak through on any path. CVE-2015-6822 The destroy_buffers function in libavcodec/sanm.c did not properly maintain height and width values in the video context, which allowed remote attackers to cause a denial of service (segmentation violation and application crash) or possibly have unspecified other impact via crafted LucasArts Smush video data. The solution to this was to reset sizes in destroy_buffers() in avcodec/sanm.c. CVE-2015-6823 Other than stated in the debian/changelog file, this issue has not yet been fixed for libav in Debian jessie LTS. CVE-2015-6824 Other than stated in the debian/changelog file, this issue has not yet been fixed for libav in Debian jessie LTS. CVE-2015-6825 The ff_frame_thread_init function in libavcodec/pthread_frame.c mishandled certain memory-allocation failures, ... [Please see the references for more information on the vulnerabilities] Affected Software/OS: 'libav' package(s) on Debian 8. Solution: Please install the updated package(s). CVSS Score: 7.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2014-9317 https://security.gentoo.org/glsa/201603-06 https://lists.debian.org/debian-lts-announce/2018/12/msg00009.html Common Vulnerability Exposure (CVE) ID: CVE-2015-6761 BugTraq ID: 77073 http://www.securityfocus.com/bid/77073 Debian Security Information: DSA-3376 (Google Search) http://www.debian.org/security/2015/dsa-3376 https://security.gentoo.org/glsa/201603-09 RedHat Security Advisories: RHSA-2015:1912 http://rhn.redhat.com/errata/RHSA-2015-1912.html http://www.securitytracker.com/id/1033816 http://www.ubuntu.com/usn/USN-2770-1 http://www.ubuntu.com/usn/USN-2770-2 Common Vulnerability Exposure (CVE) ID: CVE-2015-6818 http://www.securitytracker.com/id/1033483 http://www.ubuntu.com/usn/USN-2944-1 Common Vulnerability Exposure (CVE) ID: CVE-2015-6820 Common Vulnerability Exposure (CVE) ID: CVE-2015-6821 Common Vulnerability Exposure (CVE) ID: CVE-2015-6822 https://lists.debian.org/debian-lts-announce/2018/12/msg00010.html Common Vulnerability Exposure (CVE) ID: CVE-2015-6823 Common Vulnerability Exposure (CVE) ID: CVE-2015-6824 Common Vulnerability Exposure (CVE) ID: CVE-2015-6825 Common Vulnerability Exposure (CVE) ID: CVE-2015-6826 Common Vulnerability Exposure (CVE) ID: CVE-2015-8216 SuSE Security Announcement: openSUSE-SU-2015:2120 (Google Search) http://lists.opensuse.org/opensuse-updates/2015-11/msg00146.html Common Vulnerability Exposure (CVE) ID: CVE-2015-8217 Common Vulnerability Exposure (CVE) ID: CVE-2015-8363 SuSE Security Announcement: openSUSE-SU-2015:2370 (Google Search) http://lists.opensuse.org/opensuse-updates/2015-12/msg00118.html Common Vulnerability Exposure (CVE) ID: CVE-2015-8364 Common Vulnerability Exposure (CVE) ID: CVE-2015-8661 http://www.securitytracker.com/id/1034539 SuSE Security Announcement: openSUSE-SU-2016:0089 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00004.html Common Vulnerability Exposure (CVE) ID: CVE-2015-8662 Common Vulnerability Exposure (CVE) ID: CVE-2015-8663 Common Vulnerability Exposure (CVE) ID: CVE-2016-10190 BugTraq ID: 95986 http://www.securityfocus.com/bid/95986 http://www.openwall.com/lists/oss-security/2017/01/31/12 http://www.openwall.com/lists/oss-security/2017/02/02/1 Common Vulnerability Exposure (CVE) ID: CVE-2016-10191 BugTraq ID: 95989 http://www.securityfocus.com/bid/95989
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