SB2021060330 - Multiple vulnerabilities in FFmpeg

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Main Vulnerability Database SB2021060330

SB2021060330 - Multiple vulnerabilities in FFmpeg

Published: June 3, 2021 Updated: December 27, 2023

Security Bulletin ID SB2021060330
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Improper validation of array index (CVE-ID: CVE-2021-33815)

CWE-ID: CWE-129 - Improper Validation of Array Index

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an out-of-bounds array access within the dwa_uncompress() function in libavcodec/exr.c. A remote attacker can trick the victim to open a specially crafted image, trigger memory corruption and execute arbitrary code on the system.


2) Unchecked return value (CVE-ID: CVE-2021-38171)

CWE-ID: CWE-252 - Unchecked Return Value

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an unchecked return value within the adts_decode_extradata() function in libavformat/adtsenc.c. A remote attacker can trick the victim to open a specially crafted image and execute arbitrary code on the system.


Remediation

Install update from vendor's website.

References