PT-2019-6245 · FFmpeg+4 · Ffmpeg+4

Published 2019-09-11 · Updated 2022-06-13 · CVE-2020-22054

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 av dict set function in dict.c. This is caused by incorrect memory deallocation before removing the last reference, allowing a remote attacker to cause a denial of service.

Recommendations For FFmpeg version 4.2, as a temporary workaround, consider disabling the av dict set function until a patch is available. Restrict access to the dict.c component to minimize the risk of exploitation.

Exploit

Fix

DoS

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALT-PU-2019-2678

BDU:2022-05882

CVE-2020-22054

DLA-2818-1

DSA-4990-1

OPENSUSE-SU-2021:2919-1

OPENSUSE-SU-2021_2919-1

SUSE-SU-2021:2919-1

SUSE-SU-2021:2929-1

USN-5167-1

Affected Products

Alt Linux

Astra Linux

Ffmpeg

Suse

Ubuntu

References · 277

• 🔥 https://trac.ffmpeg.org/ticket/8315 · Exploit
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=153487325 · Vendor Advisory
• 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://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://cve.org/CVERecord?id=CVE-2020-22054 · 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://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