CVE-2020-20448 : FFmpeg 4.1.3 is affected by a Divide By Zero issue via libavcodec/ratecontrol.c,

FFmpeg 4.1.3 is affected by a Divide By Zero issue via libavcodec/ratecontrol.c, which allows a remote malicious user to cause a Denial of Service.

Published 2021-05-25 18:15:08

Updated 2021-05-27 01:48:13

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2020-20448

Ffmpeg » Ffmpeg » Version: 4.1.3
cpe:2.3:a:ffmpeg:ffmpeg:4.1.3:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.31%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 51 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.0	MEDIUM	AV:N/AC:L/Au:S/C:N/I:N/A:P	8.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	2.8	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-369 Divide By Zero

The product divides a value by zero.

Assigned by: nvd@nist.gov (Primary)

https://trac.ffmpeg.org/ticket/7990

#7990 (undefined-behavior at libavcodec/snowenc.c and division by zero at libavcodec/ratecontrol.c) – FFmpeg
Issue Tracking;Vendor Advisory

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