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CVE-2023-40551

Published: Jan 29, 2024

Modified: Nov 20, 2025

PUBLISHED

CVSS v3.1

5.1

MEDIUM

Description

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of 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:H/UI:N/S:U/C:L/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

References

vendor-advisory

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vendor-advisory

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vendor-advisory

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vendor-advisory

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vendor-advisory

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vendor-advisory

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vendor-advisory

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vendor-advisory

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vendor-advisory

x_refsource_REDHAT

https://access.redhat.com/security/cve/CVE-2023-40551

vdb-entry

x_refsource_REDHAT

issue-tracking

x_refsource_REDHAT

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