Debian Security Advisory

DLA-1630-1 libav -- LTS security update

Date Reported:
07 Jan 2019
Affected Packages:
libav
Vulnerable:
Yes
Security database references:
In Mitre's CVE dictionary: CVE-2017-9993, CVE-2017-9994, CVE-2017-14055, CVE-2017-14056, CVE-2017-14057, CVE-2017-14170, CVE-2017-14171, CVE-2017-14767, CVE-2017-15672, CVE-2017-17130, CVE-2018-6621, CVE-2018-7557, CVE-2018-14394, CVE-2018-1999010.
More information:

Several security vulnerabilities were corrected in the libav multimedia library which may lead to a denial-of-service, information disclosure or the execution of arbitrary code if a malformed file is processed.

  • CVE-2017-9993

    Libav does not properly restrict HTTP Live Streaming filename extensions and demuxer names, which allows attackers to read arbitrary files via crafted playlist data.

  • CVE-2017-9994

    libavcodec/webp.c in Libav does not ensure that pix_fmt is set, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file, related to the vp8_decode_mb_row_no_filter and pred8x8_128_dc_8_c functions.

  • CVE-2017-14055

    Denial-of-service in mv_read_header() due to lack of an EOF (End of File) check might cause huge CPU and memory consumption.

  • CVE-2017-14056

    Denial-of-service in rl2_read_header() due to lack of an EOF (End of File) check might cause huge CPU and memory consumption.

  • CVE-2017-14057

    Denial-of-service in asf_read_marker() due to lack of an EOF (End of File) check might cause huge CPU and memory consumption.

  • CVE-2017-14170

    Denial-of-service in mxf_read_index_entry_array() due to lack of an EOF (End of File) check might cause huge CPU consumption.

  • CVE-2017-14171

    Denial-of-service in nsv_parse_NSVf_header() due to lack of an EOF (End of File) check might cause huge CPU consumption.

  • CVE-2017-14767

    The sdp_parse_fmtp_config_h264 function in libavformat/rtpdec_h264.c mishandles empty sprop-parameter-sets values, which allows remote attackers to cause a denial of service (heap buffer overflow) or possibly have unspecified other impact via a crafted sdp file.

  • CVE-2017-15672

    The read_header function in libavcodec/ffv1dec.c allows remote attackers to have unspecified impact via a crafted MP4 file, which triggers an out-of-bounds read.

  • CVE-2017-17130

    The ff_free_picture_tables function in libavcodec/mpegpicture.c allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file, related to vc1_decode_i_blocks_adv.

  • CVE-2018-6621

    The decode_frame function in libavcodec/utvideodec.c in Libav allows remote attackers to cause a denial of service (out of array read) via a crafted AVI file.

  • CVE-2018-7557

    The decode_init function in libavcodec/utvideodec.c in Libav allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.

  • CVE-2018-14394

    libavformat/movenc.c in Libav allows attackers to cause a denial of service (application crash caused by a divide-by-zero error) with a user crafted Waveform audio file.

  • CVE-2018-1999010

    Libav contains multiple out of array access vulnerabilities in the mms protocol that can result in attackers accessing out of bound data.

For Debian 8 Jessie, these problems have been fixed in version 6:11.12-1~deb8u4.

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