Debian LTS Advisory ([SECURITY] [DLA 1740-1] libav security update)

Published: 2019-04-02 20:00:00
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:C

Summary:
The remote host is missing an update for the 'libav' Linux Distribution Package(s) announced via the DSA-1740-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library. CVE-2015-1872 The ff_mjpeg_decode_sof function in libavcodec/mjpegdec.c did not validate the number of components in a JPEG-LS Start Of Frame segment, which allowed remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted Motion JPEG data. CVE-2017-14058 The read_data function in libavformat/hls.c did not restrict reload attempts for an insufficient list, which allowed remote attackers to cause a denial of service (infinite loop). CVE-2017-1000460 In get_last_needed_nal() (libavformat/h264.c) the return value of init_get_bits was ignored and get_ue_golomb(&gb) was called on an uninitialized get_bits context, which caused a NULL deref exception. CVE-2018-6392 The filter_slice function in libavfilter/vf_transpose.c allowed remote attackers to cause a denial of service (out-of-array access) via a crafted MP4 file. CVE-2018-1999012 libav contained a CWE-835: Infinite loop vulnerability in pva format demuxer that could result in a vulnerability that allowed attackers to consume excessive amount of resources like CPU and RAM. This attack appeared to be exploitable via specially crafted PVA file had to be provided as input.

Affected Versions:
'libav' Linux Distribution Package(s) on Debian Linux.

Recommendations:
For Debian 8 'Jessie', these problems have been fixed in version 6:11.12-1~deb8u6. We recommend that you upgrade your libav Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2015-1872
https://nvd.nist.gov/vuln/detail/CVE-2017-1000460
https://nvd.nist.gov/vuln/detail/CVE-2017-14058
https://nvd.nist.gov/vuln/detail/CVE-2018-1999012
https://nvd.nist.gov/vuln/detail/CVE-2018-6392

References:

https://lists.debian.org/debian-lts-announce/2019/03/msg00041.html
https://security-tracker.debian.org/tracker/DLA-1740-1

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Severity
High
CVSS Score
7.1

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