CVE-2015-6818 (retired)

Priority
Description
The decode_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg before
2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a
PNG image, which allows remote attackers to cause a denial of service
(out-of-bounds array access) or possibly have unspecified other impact via
a crafted image with two or more of these chunks.
Notes
 mdeslaur> as of 2016-03-11, no equivalent fix in libav
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (7:2.8.3-1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (7:2.8.3-1)
Patches:
Upstream:http://git.videolan.org/?p=ffmpeg.git;a=commit;h=47f4e2d8960ca756ca153ab8e3e93d80449b8c91
Package
Source: libav (LP Ubuntu Debian)
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was released [4:0.8.17-0ubuntu0.12.04.2])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
More Information

Updated: 2019-09-19 15:55:27 UTC (commit d32ebc32606b9517c6fa7d65a15441e2a57a6de5)