CVE-2023-40551
Shim: out of bounds read when parsing mz binaries
CVSS Score
5.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 |
| Vendor | red hat |
| Product | red hat enterprise linux 7 |
| Published | Jan 29, 2024 |
| Last Updated | Nov 20, 2025 |
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CVSS v3 Breakdown
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
Affected Versions
Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1834 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1835 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1873 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1876 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1883 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1902 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1903 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1959 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2086 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-40551 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2259918 lists.debian.org: https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html