Input validation error in FFmpeg - CVE-2017-14055
Published: August 31, 2017 / Updated: August 4, 2020
Vulnerability identifier: #VU33764
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-14055
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
In libavformat/mvdec.c in FFmpeg 3.3.3, a DoS in mv_read_header() due to lack of an EOF (End of File) check might cause huge CPU and memory consumption. When a crafted MV file, which claims a large "nb_frames" field in the header but does not contain sufficient backing data, is provided, the loop over the frames would consume huge CPU and memory resources, since there is no EOF check inside the loop.
Affected software
FFmpeg
Arch Linux
ffmpeg (Alpine package)
Arch Linux
ffmpeg (Alpine package)
How to mitigate CVE-2017-14055
Install update from vendor's website.
ffmpeg (Alpine package) - update to 3.1.11-r1