#VU70608 Buffer overflow in FFmpeg - CVE-2020-22028

Vulnerability identifier: #VU70608

Vulnerability risk: Medium

CVSSv4.0: 6.6 [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/E:U/U:Green]

CVE-ID: CVE-2020-22028

CWE-ID: CWE-119

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 boundary error within the ilter_vertically_8() function in libavfilter/vf_avgblur.c in FFmpeg. A remote attacker can trigger memory corruption and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FFmpeg: 4.2

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External links
https://trac.ffmpeg.org/ticket/8274

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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.