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[SECURITY] [DLA 1907-1] libav security update

Package        : libav
Version        : 6:11.12-1~deb8u8
CVE ID         : CVE-2017-9987 CVE-2018-5766 CVE-2018-11102 CVE-2019-14372

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


    In Libav, there was a heap-based buffer overflow in the function
    hpel_motion in mpegvideo_motion.c. A crafted input could have lead to
    a remote denial of service attack.


    In Libav there was an invalid memcpy in the av_packet_ref function of
    libavcodec/avpacket.c. Remote attackers could have leveraged this
    vulnerability to cause a denial of service (segmentation fault) via a
    crafted avi file.


    A read access violation in the mov_probe function in
    libavformat/mov.c allowed remote attackers to cause a denial of
    service (application crash), as demonstrated by avconv.


    In Libav, there was an infinite loop in the function
    wv_read_block_header() in the file wvdec.c.


    In mpc8_read_header in libavformat/mpc8.c, an input file could have
    resulted in an avio_seek infinite loop and hang, with 100% CPU
    consumption. Attackers could have leveraged this vulnerability to
    cause a denial of service via a crafted file.

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


mike gabriel aka sunweaver (Debian Developer)
fon: +49 (1520) 1976 148

GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
mail: sunweaver@debian.org, http://sunweavers.net

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