FFmpeg 4.2.1 vf_convolution.c filter_prewitt 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 has been found in FFmpeg 4.2.1 and classified as problematic. The affected element is the function filter_prewitt of the file libavfilter/vf_convolution.c. The manipulation leads to integer overflow. This vulnerability is traded as CVE-2021-38092. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in FFmpeg 4.2.1 (Multimedia Processing Software). It has been rated as critical. This issue affects the function filter_prewitt of the file libavfilter/vf_convolution.c. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was shared 09/20/2021 as 8263. The advisory is shared at trac.ffmpeg.org. The identification of this vulnerability is CVE-2021-38092 since 08/04/2021. It demands that the victim is doing some kind of user interaction. Technical details are known, 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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-2021-38092 (🔍)
GCVE (CVE): GCVE-0-2021-38092
GCVE (VulDB): GCVE-100-182969

Entryinfo

Created: 09/20/2021 21:59
Updated: 09/29/2021 13:30
Changes: 09/20/2021 21:59 (42), 09/29/2021 13:23 (1), 09/29/2021 13:30 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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