7.5
CVSSv2

CVE-2015-6818

Published: 06/09/2015 Updated: 07/11/2023
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Summary

The decode_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg prior to 2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allows remote malicious users 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.

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ffmpeg ffmpeg

canonical ubuntu linux 12.04

Vendor Advisories

Libav could be made to crash or run programs as your login if it opened a specially crafted file ...