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CVE-2015-6818

Publication date 5 September 2015

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
ffmpeg 18.04 LTS bionic
Not affected
17.10 artful
Not affected
17.04 zesty
Not affected
16.10 yakkety
Not affected
16.04 LTS xenial
Not affected
15.10 wily
Not affected
15.04 vivid
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise Not in release
libav 18.04 LTS bionic Not in release
17.10 artful Not in release
17.04 zesty Not in release
16.10 yakkety Not in release
16.04 LTS xenial Not in release
15.10 wily Not in release
15.04 vivid Ignored end of life
14.04 LTS trusty
Not affected
12.04 LTS precise
Fixed 4:0.8.17-0ubuntu0.12.04.2

Notes

mdeslaur

as of 2016-03-11, no equivalent fix in libav

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
ffmpeg

References

Related Ubuntu Security Notices (USN)

Other references