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Debian DLA-1611-2 : libav security update
high Nessus Plugin ID 119816
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Synopsis
The remote Debian host is missing a security update.Description
Two more security issues have been corrected in the libav multimedia library. This is a follow-up announcement for DLA-1611-1.CVE-2015-6823
The allocate_buffers function in libavcodec/alac.c did not initialize certain context data, which allowed remote attackers to cause a denial of service (segmentation violation) or possibly have unspecified other impact via crafted Apple Lossless Audio Codec (ALAC) data. This issues has now been addressed by clearing pointers in avcodec/alac.c's allocate_buffers().
Other than stated in debian/changelog of upload 6:11.12-1~deb8u2, this issue only now got fixed with upload of 6:11.12-1~deb8u3.
CVE-2015-6824
The sws_init_context function in libswscale/utils.c did not initialize certain pixbuf data structures, which allowed remote attackers to cause a denial of service (segmentation violation) or possibly have unspecified other impact via crafted video data. In swscale/utils.c now these pix buffers get cleared which fixes use of uninitialized memory.
Other than stated in debian/changelog of upload 6:11.12-1~deb8u2, this issue only now got fixed with upload of 6:11.12-1~deb8u3.
For Debian 8 'Jessie', these problems have been fixed in version 6:11.12-1~deb8u3.
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/2018/12/msg00010.html
Plugin Details
Severity: High
ID: 119816
File Name: debian_DLA-1611.nasl
Version: 1.5
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 12/21/2018
Updated: 7/15/2024
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
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
CVSS Score Source: CVE-2015-6824
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: 12/21/2018
Vulnerability Publication Date: 9/6/2015