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AUSCERT External Security Bulletin Redistribution
[DLA 1809-1] libav security update
30 May 2019
AusCERT Security Bulletin Summary
Operating System: Debian GNU/Linux 8
Impact/Access: Denial of Service -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
CVE Names: CVE-2019-11338 CVE-2018-15822
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Package : libav
Version : 6:11.12-1~deb8u7
CVE ID : CVE-2018-15822 CVE-2019-11338
Two more security issues have been corrected in multiple demuxers and
decoders of the libav multimedia library.
The flv_write_packet function in libavformat/flvenc.c in libav did
not check for an empty audio packet, leading to an assertion failure.
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
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
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