v4l2loopback Card Label format string

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in v4l2loopback. This affects an unknown part of the component Card Label Handler. This manipulation causes format string. This vulnerability appears as CVE-2022-2652. 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 was found in v4l2loopback (version now known). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component Card Label Handler. The manipulation with an unknown input leads to a format string vulnerability. The CWE definition for the vulnerability is CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Depending on the way the format strings in the card label are crafted it's possible to leak kernel stack memory. There is also the possibility for DoS due to the v4l2loopback kernel module crashing when providing the card label on request (reproduce e.g. with many %s modifiers in a row).

The weakness was presented 08/04/2022. It is possible to read the advisory at huntr.dev. This vulnerability is known as CVE-2022-2652 since 08/04/2022. The technical details are unknown and an exploit is not publicly available.

Applying the patch e4cd225557486c420f6a34411f98c575effd43dd is able to eliminate this problem. The bugfix is ready for download at github.com.

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

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.0
NVD Vector: 🔍

CNA Base Score: 7.3
CNA Vector (huntr.dev): 🔍

CVSSv2info

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

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: e4cd225557486c420f6a34411f98c575effd43dd

Timelineinfo

08/04/2022 🔍
08/04/2022 +0 days 🔍
08/04/2022 +0 days 🔍
08/30/2022 +26 days 🔍

Sourcesinfo

Advisory: e4cd225557486c420f6a34411f98c575effd43dd
Status: Confirmed

CVE: CVE-2022-2652 (🔍)
GCVE (CVE): GCVE-0-2022-2652
GCVE (VulDB): GCVE-100-205603

Entryinfo

Created: 08/04/2022 15:30
Updated: 08/30/2022 12:06
Changes: 08/04/2022 15:30 (49), 08/30/2022 11:59 (1), 08/30/2022 12:06 (9)
Complete: 🔍
Cache ID: 216::103

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