Improper Input Validation Affecting libav package, versions <6:11.12-1~deb8u5
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Start learning- Snyk IDSNYK-DEBIAN8-LIBAV-404835
- published7 Sept 2017
- disclosed7 Sept 2017
Introduced: 7 Sep 2017
CVE-2017-14169 (opens in a new tab)How to fix?
Upgrade Debian:8 libav to version 6:11.12-1~deb8u5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libav package and not the libav package as distributed by Debian.
See How to fix? for Debian:8 relevant fixed versions and status.
In the mxf_read_primer_pack function in libavformat/mxfdec.c in FFmpeg 3.3.3 -> 2.4, an integer signedness error might occur when a crafted file, which claims a large "item_num" field such as 0xffffffff, is provided. As a result, the variable "item_num" turns negative, bypassing the check for a large value.
References
- https://security-tracker.debian.org/tracker/CVE-2017-14169
- https://github.com/FFmpeg/FFmpeg/commit/a4e85b2e1c8d5b4bf0091157bbdeb0e457fb7b8f
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14169
- http://www.debian.org/security/2017/dsa-3996
- https://lists.debian.org/debian-lts-announce/2019/02/msg00005.html
- https://github.com/FFmpeg/FFmpeg/commit/9d00fb9d70ee8c0cc7002b89318c5be00f1bbdad
- http://www.securityfocus.com/bid/100692
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-14169