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CVE-2023-40550

Published: Jan 29, 2024

Modified: Jan 27, 2026

PUBLISHED

CVSS v3.1

5.5

MEDIUM

Description

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.

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 7	unaffected `0:15.8-3.el7 - < *`
Red Hat	Red Hat Enterprise Linux 7	unaffected `0:15.8-1.el7 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:15.8-4.el8_9 - < *`
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	unaffected `0:15.8-2.el8_2 - < *`
Red Hat	Red Hat Enterprise Linux 8.2 Telecommunications Update Service	unaffected `0:15.8-2.el8_2 - < *`
Red Hat	Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions	unaffected `0:15.8-2.el8_2 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected `0:15.8-2.el8_4 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service	unaffected `0:15.8-2.el8_4 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions	unaffected `0:15.8-2.el8_4 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	unaffected `0:15.8-2.el8_6 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	unaffected `0:15.8-2.el8 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	unaffected `0:15.8-2.el8 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:15.8-4.el9_3 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	unaffected `0:15.8-3.el9 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	unaffected `0:15.8-2.el9 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	unaffected `0:15.8-2.el9 - < *`
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	unaffected `0:15.8-3.el9_2 - < *`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

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

vdb-entry

x_refsource_REDHAT

issue-tracking

x_refsource_REDHAT

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