Debian DLA-1142-1 : libav security update

critical Nessus Plugin ID 104056


The remote Debian host is missing a security update.


Multiple vulnerabilities have been found in libav :


The smka_decode_frame function in libavcodec/smacker.c does not verify that the data size is consistent with the number of channels, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted Smacker data.


The decode_residual function in libavcodec allows remote attackers to cause a denial of service (buffer over-read) or obtain sensitive information from process memory via a crafted h264 video file.


The decode_frame function in libavcodec/pictordec.c is vulnerable to an out-of-bounds write caused by a heap-based buffer overflow.


The decode_dds1 function in libavcodec/dfa.c allows remote attackers to cause a denial of service (Heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.

For Debian 7 'Wheezy', these problems have been fixed in version 6:0.8.21-0+deb7u1.

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: Critical

ID: 104056

File Name: debian_DLA-1142.nasl

Version: 3.6

Type: local

Agent: unix

Published: 10/23/2017

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P


Risk Factor: Critical

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: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:ffmpeg, p-cpe:/a:debian:debian_linux:ffmpeg-dbg, p-cpe:/a:debian:debian_linux:ffmpeg-doc, p-cpe:/a:debian:debian_linux:libav-dbg, p-cpe:/a:debian:debian_linux:libav-doc, p-cpe:/a:debian:debian_linux:libav-extra-dbg, p-cpe:/a:debian:debian_linux:libav-tools, p-cpe:/a:debian:debian_linux:libavcodec-dev, p-cpe:/a:debian:debian_linux:libavcodec-extra-53, p-cpe:/a:debian:debian_linux:libavcodec53, p-cpe:/a:debian:debian_linux:libavdevice-dev, p-cpe:/a:debian:debian_linux:libavdevice-extra-53, p-cpe:/a:debian:debian_linux:libavdevice53, p-cpe:/a:debian:debian_linux:libavfilter-dev, p-cpe:/a:debian:debian_linux:libavfilter-extra-2, p-cpe:/a:debian:debian_linux:libavfilter2, p-cpe:/a:debian:debian_linux:libavformat-dev, p-cpe:/a:debian:debian_linux:libavformat-extra-53, p-cpe:/a:debian:debian_linux:libavformat53, p-cpe:/a:debian:debian_linux:libavutil-dev, p-cpe:/a:debian:debian_linux:libavutil-extra-51, p-cpe:/a:debian:debian_linux:libavutil51, p-cpe:/a:debian:debian_linux:libpostproc-dev, p-cpe:/a:debian:debian_linux:libpostproc-extra-52, p-cpe:/a:debian:debian_linux:libpostproc52, p-cpe:/a:debian:debian_linux:libswscale-dev, p-cpe:/a:debian:debian_linux:libswscale-extra-2, p-cpe:/a:debian:debian_linux:libswscale2, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/21/2017

Reference Information

CVE: CVE-2015-8365, CVE-2017-7208, CVE-2017-7862, CVE-2017-9992