CVE-2020-20902

CVSS V2 Medium 4.3 CVSS V3 Medium 6.5

Description

A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.

Overview

CVE ID
CVE-2020-20902

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-09-20T16:15:09

Last Modified Date
2021-10-01T23:34:40

Weakness Enumerations

CWE	URL
CWE-125	http://cwe.mitre.org/data/definitions/125.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:P/I:N/A:N

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
NONE

Base Score
4.3

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
6.5

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
3.6

References

Reference URL	Reference Tags
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=0c61661a2cbe1b8b284c80ada1c2fdddf4992cad	Exploit Third Party Advisory
https://trac.ffmpeg.org/ticket/8176	Issue Tracking Patch Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-20902
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20902

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:52:38				Added to TrackCVE
2022-12-05 10:55:11	2021-09-20T16:15Z	2021-09-20T16:15:09	CVE Published Date	updated
2022-12-05 10:55:11		2021-10-01T23:34:40	CVE Modified Date	updated
2022-12-05 10:55:11		Analyzed	Vulnerability Status	updated