FFmpeg up to 4.3 libavcodec buffer overflow

entryeditHistoryDiffjsonxmlCTI
CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$0-$5k0.47

A vulnerability has been found in FFmpeg up to 4.3 (Multimedia Processing Software) and classified as critical. Affected by this vulnerability is some unknown functionality of the component libavcodec. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-120. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 04/08/2021. It is possible to read the advisory at trac.ffmpeg.org. This vulnerability is known as CVE-2021-30123 since 04/02/2021. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/11/2021).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.videolan.org.

Productinfoedit

Type

Name

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2infoedit

AVACAuCIA
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-120
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍

Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: git.videolan.org

Timelineinfoedit

04/02/2021 CVE assigned
04/08/2021 +6 days Advisory disclosed
04/08/2021 +0 days VulDB entry created
04/11/2021 +3 days VulDB last update

Sourcesinfoedit

Product: https://ffmpeg.org/

Advisory: trac.ffmpeg.org
Status: Not defined

CVE: CVE-2021-30123 (🔒)

Entryinfoedit

Created: 04/08/2021 09:57 AM
Updated: 04/11/2021 05:20 PM
Changes: (1) source_cve_assigned
Complete: 🔍

Comments

No comments yet. Please log in to comment.

Do you know our Splunk app?

Download it now for free!