FFmpeg 4.2.1 vf_edgedetect.c gaussian_blur buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in FFmpeg 4.2.1. Affected by this vulnerability is the function gaussian_blur of the file libavfilter/vf_edgedetect.c. The manipulation leads to buffer overflow. This vulnerability is listed as CVE-2020-20900. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, has been found in FFmpeg 4.2.1 (Multimedia Processing Software). This issue affects the function gaussian_blur of the file libavfilter/vf_edgedetect.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was presented 09/20/2021 as 8275. It is possible to read the advisory at trac.ffmpeg.org. The identification of this vulnerability is CVE-2020-20900 since 08/13/2020. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch de598f82f8c3f8000e1948548e8088148e2b1f44 is able to eliminate this problem. The bugfix is ready for download at git.ffmpeg.org.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: de598f82f8c3f8000e1948548e8088148e2b1f44

Timelineinfo

08/13/2020 🔍
09/20/2021 +403 days 🔍
09/20/2021 +0 days 🔍
09/29/2021 +9 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: 8275
Status: Confirmed

CVE: CVE-2020-20900 (🔍)
GCVE (CVE): GCVE-0-2020-20900
GCVE (VulDB): GCVE-100-182963

Entryinfo

Created: 09/20/2021 21:56
Updated: 09/29/2021 12:02
Changes: 09/20/2021 21:56 (42), 09/29/2021 11:53 (7), 09/29/2021 12:02 (1)
Complete: 🔍
Cache ID: 216::103

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