Debian DLA-1654-1 : libav security update

high Nessus Plugin ID 121622
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VPR Score: 5.9


The remote Debian host is missing a security update.


Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library.


libavcodec/utils.c omitted a certain codec ID during enforcement of alignment, which allowed remote attackers to cause a denial of ervice (out-of-bounds access) or possibly have unspecified other impact via crafted JV data.


Double-free vulnerability in libavformat/mov.c allowed remote attackers to cause a denial of service (memory corruption and crash) via a crafted .m4a file.


libav had an out-of-bounds write caused by a heap-based buffer overflow related to the decode_frame_common function in libavcodec/pngdec.c.


libav had an out-of-bounds write caused by a heap-based buffer overflow related to the ipvideo_decode_block_opcode_0xA function in libavcodec/interplayvideo.c and the avcodec_align_dimensions2 function in libavcodec/utils.c.


In the mxf_read_primer_pack function in libavformat/mxfdec.c in, an integer signedness error might have occured when a crafted file, claiming a large 'item_num' field such as 0xffffffff, was provided. As a result, the variable 'item_num' turned negative, bypassing the check for a large value.


In libavformat/asfdec_f.c a DoS in asf_build_simple_index() due to lack of an EOF (End of File) check might have caused huge CPU consumption. When a crafted ASF file, claiming a large 'ict' field in the header but not containing sufficient backing data, was provided, the for loop would have consumed huge CPU and memory resources, since there was no EOF check inside the loop.

For Debian 8 'Jessie', these problems have been fixed in version 6:11.12-1~deb8u5.

We recommend that you upgrade your libav packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: High

ID: 121622

File Name: debian_DLA-1654.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2/7/2019

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libav-dbg, p-cpe:/a:debian:debian_linux:libav-doc, p-cpe:/a:debian:debian_linux:libav-tools, p-cpe:/a:debian:debian_linux:libavcodec-dev, p-cpe:/a:debian:debian_linux:libavcodec-extra, p-cpe:/a:debian:debian_linux:libavcodec-extra-56, p-cpe:/a:debian:debian_linux:libavcodec56, p-cpe:/a:debian:debian_linux:libavdevice-dev, p-cpe:/a:debian:debian_linux:libavdevice55, p-cpe:/a:debian:debian_linux:libavfilter-dev, p-cpe:/a:debian:debian_linux:libavfilter5, p-cpe:/a:debian:debian_linux:libavformat-dev, p-cpe:/a:debian:debian_linux:libavformat56, p-cpe:/a:debian:debian_linux:libavresample-dev, p-cpe:/a:debian:debian_linux:libavresample2, p-cpe:/a:debian:debian_linux:libavutil-dev, p-cpe:/a:debian:debian_linux:libavutil54, p-cpe:/a:debian:debian_linux:libswscale-dev, p-cpe:/a:debian:debian_linux:libswscale3, cpe:/o:debian:debian_linux:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 2/6/2019

Vulnerability Publication Date: 11/5/2014

Reference Information

CVE: CVE-2014-8542, CVE-2015-1207, CVE-2017-14169, CVE-2017-14223, CVE-2017-7863, CVE-2017-7865

BID: 70881