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Debian DLA-1809-1 : libav security update

high Nessus Plugin ID 125555

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Synopsis

The remote Debian host is missing a security update.

Description

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

CVE-2018-15822

The flv_write_packet function in libavformat/flvenc.c in libav did not check for an empty audio packet, leading to an assertion failure.

CVE-2019-11338

libavcodec/hevcdec.c in libav mishandled detection of duplicate first slices, which allowed remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.

For Debian 8 'Jessie', these problems have been fixed in version 6:11.12-1~deb8u7.

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/2019/05/msg00043.html

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

Plugin Details

Severity: High

ID: 125555

File Name: debian_DLA-1809.nasl

Version: 1.5

Type: local

Agent: unix

Published: 5/30/2019

Updated: 5/17/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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

CVSS Score Source: CVE-2019-11338

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:libavresample2, p-cpe:/a:debian:debian_linux:libswscale3, p-cpe:/a:debian:debian_linux:libswscale-dev, p-cpe:/a:debian:debian_linux:libavformat56, p-cpe:/a:debian:debian_linux:libav-dbg, p-cpe:/a:debian:debian_linux:libavcodec56, p-cpe:/a:debian:debian_linux:libavfilter5, p-cpe:/a:debian:debian_linux:libavresample-dev, p-cpe:/a:debian:debian_linux:libavcodec-dev, p-cpe:/a:debian:debian_linux:libav-tools, p-cpe:/a:debian:debian_linux:libavdevice-dev, p-cpe:/a:debian:debian_linux:libavdevice55, p-cpe:/a:debian:debian_linux:libavcodec-extra, p-cpe:/a:debian:debian_linux:libavutil54, p-cpe:/a:debian:debian_linux:libavfilter-dev, cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:libav-doc, p-cpe:/a:debian:debian_linux:libavutil-dev, p-cpe:/a:debian:debian_linux:libavformat-dev, p-cpe:/a:debian:debian_linux:libavcodec-extra-56

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/29/2019

Vulnerability Publication Date: 8/23/2018

Reference Information

CVE: CVE-2018-15822, CVE-2019-11338