CVE-2023-40548
HIGHshim < 15.8 - Heap-Based Buffer Overflow via PE Binary Parsing
Title source: llmDescription
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
0.0003
EPSS Percentile
9.7%
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 (3)
fedoraproject/fedora
39
redhat/shim
15.8 rc1
redhat/shim
< 15.8
Published
Jan 29, 2024
Tracked Since
Feb 18, 2026