Debian Security Advisory
DLA-1740-1 libav -- LTS security update
- Date Reported:
- 30 Mar 2019
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2015-1872, CVE-2017-14058, CVE-2017-1000460, CVE-2018-639, CVE-2018-1999012.
- More information:
Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library.
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.
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).
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.
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.
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.
For Debian 8
Jessie, these problems have been fixed in version 6:11.12-1~deb8u6.
We recommend that you upgrade your libav packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS