#VU19183 Division by zero in FFmpeg - CVE-2019-13390

Vulnerability identifier: #VU19183

Vulnerability risk: Low

CVSSv4.0: 5.5 [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/E:P/U:Clear]

CVE-ID: CVE-2019-13390

CWE-ID: CWE-369

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FFmpeg
Universal components / Libraries / Libraries used by multiple products

Vendor: ffmpeg.sourceforge.net

Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a divide-by-zero condition in the "adx_write_trailer" function in the "libavformat/rawenc.c" file. A remote attacker can trick the victim to open a specially crafted file and crash the affected application.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FFmpeg: 2.0 - 4.1.4

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External links
https://trac.ffmpeg.org/ticket/7979
https://trac.ffmpeg.org/ticket/7981
https://trac.ffmpeg.org/ticket/7982
https://trac.ffmpeg.org/ticket/7983
https://trac.ffmpeg.org/ticket/7985

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.