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DMA attacks on the parameter buffer used by the PnpSmm...

Moderate severity Unreviewed Published Nov 15, 2022 to the GitHub Advisory Database • Updated Feb 14, 2023

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

DMA attacks on the parameter buffer used by the PnpSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack) DMA attacks on the parameter buffer used by the PnpSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack) . This issue was discovered by Insyde engineering during a security review. This iss was fixed in Kernel 5.2: 05.27.29, Kernel 5.3: 05.36.25, Kernel 5.4: 05.44.25, Kernel 5.5: 05.52.25. CWE-367 https://www.insyde.com/security-pledge/SA-2022043

References

Published by the National Vulnerability Database Nov 15, 2022
Published to the GitHub Advisory Database Nov 15, 2022
Last updated Feb 14, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
High
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.044%
(14th percentile)

Weaknesses

CVE ID

CVE-2022-30774

GHSA ID

GHSA-5529-988r-7c93

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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