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Debian DLA-464-1 : libav security update

medium Nessus Plugin ID 91049

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Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that there was a use-after free vulnerability in libav, a multimedia player, server, encoder and transcoder library.

The seg_write_packet function in libavformat/segment.c in ffmpeg 2.1.4 and earlier does not free the correct memory location, which allows remote attackers to cause a denial of service ('invalid memory handler') and possibly execute arbitrary code via a crafted video that triggers a use after free.

For Debian 7 Wheezy, this issue has been fixed in libav version 6:0.8.17-2+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.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2016/05/msg00015.html

https://packages.debian.org/source/wheezy/libav

Plugin Details

Severity: Medium

ID: 91049

File Name: debian_DLA-464.nasl

Version: 2.7

Type: local

Agent: unix

Published: 5/12/2016

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

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: 5/10/2016

Reference Information

CVE: CVE-2014-9676