CVE-2015-6818
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 7:2.7.2-1 |
| debian | bullseye | fixed | 7:2.7.2-1 |
| debian | forky | fixed | 7:2.7.2-1 |
| debian | sid | fixed | 7:2.7.2-1 |
| debian | trixie | fixed | 7:2.7.2-1 |
| ubuntu | 12.04 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| ffmpeg | ffmpeg | {"endIncluding":"2.7.1"} | |
References
- http://ffmpeg.org/security.html
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=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
- https://security-tracker.debian.org/tracker/CVE-2015-6818
CWEs
CWE-17
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.