Divide-by-zero in FFmpeg - CVE-2018-14394
Published: July 23, 2018
Vulnerability identifier: #VU13984
CSH Severity: Low
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-14394
CWE-ID: CWE-369
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote unauthenticated attacker to cause DoS condition.
The vulnerability exists due to boundary error when the ff_mov_write_packet() function, as defined in the libavformat/movenc.c source code file of the affected software, is used. A remote attacker can trick the victim into opening a specially crafted WAV file that submits malicious input, trigger a divide-by-zero error and cause the service to crash.
Affected software
FFmpeg
ffmpeg (Alpine package)
ffmpeg (Alpine package)
How to mitigate CVE-2018-14394
Update to version 4.0.2.
FFmpeg - update to 4.0.2
ffmpeg (Alpine package) - update to 3.4.4-r0
ffmpeg (Alpine package) - update to 3.4.4-r0