PT-2019-6239 · FFmpeg+3 · Ffmpeg+3

Published 2019-09-11 · Updated 2025-07-11 · CVE-2020-22044

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions FFmpeg version 4.2

Description A Denial of Service issue exists due to a memory leak in the url open dyn buf internal function in libavformat/aviobuf.c. This allows a remote attacker to cause a denial of service. The vulnerability is related to incorrect memory deallocation before removing the last reference.

Recommendations For FFmpeg version 4.2, as a temporary workaround, consider disabling the url open dyn buf internal function until a patch is available. However, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALT-PU-2019-2678

BDU:2022-05876

CVE-2020-22044

DLA-2818-1

OESA-2025-1771

OESA-2025-1772

OESA-2025-1773

OPENSUSE-SU-2021:2322-1

OPENSUSE-SU-2021_2322-1

SUSE-SU-2021:2322-1

SUSE-SU-2021:2929-1

USN-5167-1

Affected Products

Alt Linux

Ffmpeg

Suse

Ubuntu

References · 306

• 🔥 https://trac.ffmpeg.org/ticket/8295 · Exploit
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22037 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3566 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-22038 · Security Note
• https://ubuntu.com/security/CVE-2021-38114 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22042 · Security Note
• https://bdu.fstec.ru/vul/2021-05314 · Security Note
• https://bdu.fstec.ru/vul/2022-00243 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21041 · Security Note
• https://osv.dev/vulnerability/OESA-2025-1772 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05187 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22022 · Security Note
• https://bdu.fstec.ru/vul/2022-01801 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20445 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22039 · Security Note