FFmpeg 4.2.1 vf_convolution.c filter16_sobel integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in FFmpeg 4.2.1. Impacted is the function filter16_sobel of the file libavfilter/vf_convolution.c. Executing a manipulation can lead to integer overflow. This vulnerability appears as CVE-2021-38091. The attack may be performed from remote. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in FFmpeg 4.2.1 (Multimedia Processing Software). It has been declared as critical. This vulnerability affects the function filter16_sobel of the file libavfilter/vf_convolution.c. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 09/20/2021 as 8263. The advisory is shared for download at trac.ffmpeg.org. This vulnerability was named CVE-2021-38091 since 08/04/2021. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Applying the patch 99f8d32129dd233d4eb2efa44678a0bc44869f23 is able to eliminate this problem. The bugfix is ready for download at git.ffmpeg.org.

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Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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: 99f8d32129dd233d4eb2efa44678a0bc44869f23

Timelineinfo

08/04/2021 🔍
09/20/2021 +47 days 🔍
09/20/2021 +0 days 🔍
09/29/2021 +9 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: 8263
Status: Confirmed

CVE: CVE-2021-38091 (🔍)
GCVE (CVE): GCVE-0-2021-38091
GCVE (VulDB): GCVE-100-182968

Entryinfo

Created: 09/20/2021 21:58
Updated: 09/29/2021 13:17
Changes: 09/20/2021 21:58 (42), 09/29/2021 13:11 (1), 09/29/2021 13:17 (18)
Complete: 🔍
Cache ID: 216::103

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