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CVE-2023-40550

Date: January 29, 2024

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.

Language: C

Severity Score

5.5

Related Resources (15)

Url: https://security-tracker.debian.org/tracker/CVE-2023-40550

Url: https://access.redhat.com/errata/RHSA-2024:2086

Url: https://bugzilla.redhat.com/show_bug.cgi?id=2259915

Url: https://access.redhat.com/errata/RHSA-2024:1835

Url: https://access.redhat.com/errata/RHSA-2024:1834

Url: https://nvd.nist.gov/vuln/detail/CVE-2023-40550

Url: https://access.redhat.com/errata/RHSA-2024:1903

Url: https://access.redhat.com/errata/RHSA-2024:1902

Url: https://access.redhat.com/security/cve/CVE-2023-40550

Url: https://access.redhat.com/errata/RHSA-2024:1959

Url: https://access.redhat.com/errata/RHSA-2024:1873

Url: https://access.redhat.com/errata/RHSA-2024:1883

Url: https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html

Url: https://access.redhat.com/errata/RHSA-2024:1876

Url: https://www.mend.io/vulnerability-database/CVE-2023-40550

Severity Score

5.5

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:	5.5
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	NONE
Availability (A):	NONE

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