CVE-2015-6818
First published: Sun Sep 06 2015(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FFmpeg | <=2.7.1 | |
| Ubuntu | =12.04 |
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Reference Links
- http://ffmpeg.org/security.html
- http://git.videolan.org/?p=ffmpeg.git;a=commit;h=47f4e2d8960ca756ca153ab8e3e93d80449b8c91
- http://www.securitytracker.com/id/1033483
- http://www.ubuntu.com/usn/USN-2944-1
- https://lists.debian.org/debian-lts-announce/2018/12/msg00009.html
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=47f4e2d8960ca756ca153ab8e3e93d80449b8c91
Frequently Asked Questions
What is the severity of CVE-2015-6818?
CVE-2015-6818 is classified as a denial of service vulnerability.
How do I fix CVE-2015-6818?
To fix CVE-2015-6818, upgrade FFmpeg to version 2.7.2 or later.
What impact does CVE-2015-6818 have on affected systems?
CVE-2015-6818 can allow remote attackers to cause out-of-bounds array access, leading to a potential crash or denial of service.
Which versions of FFmpeg are affected by CVE-2015-6818?
FFmpeg versions prior to 2.7.2, specifically up to version 2.7.1, are affected by CVE-2015-6818.
Is Ubuntu 12.04 affected by CVE-2015-6818?
Yes, Ubuntu 12.04 is affected if it includes the vulnerable versions of FFmpeg.
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- vendor/ffmpeg
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- version/ubuntu/12.04