CVE-2023-40548

HIGH

shim < 15.8 - Heap-Based Buffer Overflow via PE Binary Parsing

Title source: llm
STIX 2.1

Description

A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.

References (12)

Core 12
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1834
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1835
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1873
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1876
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1883
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1902
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1903
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:1959
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2086
Vendor Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-40548
Issue Tracking, Vendor Advisory issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2241782

Scores

CVSS v3 7.4
EPSS 0.0043
EPSS Percentile 34.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-190 CWE-787
Status published
Products (18)
fedoraproject/fedora 39
Red Hat/Red Hat Enterprise Linux 7 0:15.8-1.el7
Red Hat/Red Hat Enterprise Linux 7 0:15.8-3.el7
Red Hat/Red Hat Enterprise Linux 8 0:15.8-4.el8_9
Red Hat/Red Hat Enterprise Linux 8.2 Advanced Update Support 0:15.8-2.el8_2
Red Hat/Red Hat Enterprise Linux 8.2 Telecommunications Update Service 0:15.8-2.el8_2
Red Hat/Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions 0:15.8-2.el8_2
Red Hat/Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:15.8-2.el8_4
Red Hat/Red Hat Enterprise Linux 8.4 Telecommunications Update Service 0:15.8-2.el8_4
Red Hat/Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions 0:15.8-2.el8_4
... and 8 more
Published Jan 29, 2024
Tracked Since Feb 18, 2026