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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0351 libav security update 7 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libav Publisher: Debian Operating System: Debian GNU/Linux 8 Impact/Access: Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2017-14223 CVE-2017-14169 CVE-2017-7865 CVE-2017-7863 CVE-2015-1207 CVE-2014-8542 Reference: ESB-2017.2545 Original Bulletin: https://security-tracker.debian.org/tracker/DLA-1654-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Package : libav Version : 6:11.12-1~deb8u5 CVE ID : CVE-2014-8542 CVE-2015-1207 CVE-2017-7863 CVE-2017-7865 CVE-2017-14169 CVE-2017-14223 Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library. CVE-2014-8542 libavcodec/utils.c omitted a certain codec ID during enforcement of alignment, which allowed remote attackers to cause a denial of ervice (out-of-bounds access) or possibly have unspecified other impact via crafted JV data. CVE-2015-1207 Double-free vulnerability in libavformat/mov.c allowed remote attackers to cause a denial of service (memory corruption and crash) via a crafted .m4a file. CVE-2017-7863 libav had an out-of-bounds write caused by a heap-based buffer overflow related to the decode_frame_common function in libavcodec/pngdec.c. CVE-2017-7865 libav had an out-of-bounds write caused by a heap-based buffer overflow related to the ipvideo_decode_block_opcode_0xA function in libavcodec/interplayvideo.c and the avcodec_align_dimensions2 function in libavcodec/utils.c. CVE-2017-14169 In the mxf_read_primer_pack function in libavformat/mxfdec.c in, an integer signedness error might have occured when a crafted file, claiming a large "item_num" field such as 0xffffffff, was provided. As a result, the variable "item_num" turned negative, bypassing the check for a large value. CVE-2017-14223 In libavformat/asfdec_f.c a DoS in asf_build_simple_index() due to lack of an EOF (End of File) check might have caused huge CPU consumption. When a crafted ASF file, claiming a large "ict" field in the header but not containing sufficient backing data, was provided, the for loop would have consumed huge CPU and memory resources, since there was no EOF check inside the loop. For Debian 8 "Jessie", these problems have been fixed in version 6:11.12-1~deb8u5. 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 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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