CVE-2023-405487.4HighCWE-190

CVE-2023-40548: Shim: interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems

Red Hat · Red Hat Enterprise Linux 7

Vendor fix available · Affected: Red Hat Enterprise Linux 7 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.4%probability of exploitation in the next 30 days

38th percentile

050100

Higher than 38% of scored CVEs

7.4HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products17

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Red Hat · Red Hat Enterprise Linux 7Versions not stated
Red Hat · Red Hat Enterprise Linux 7Versions not stated
Red Hat · Red Hat Enterprise Linux 8Versions not stated
Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceVersions not stated
Red Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsVersions not stated
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceVersions not stated
Red Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsVersions not stated
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 9Versions not stated
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 9.2 Extended Update SupportVersions not stated

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Integer Overflow · Memory Corruption
Vendor: Red Hat
Published: January 2024
Band: Unlikely (under 1%), January 2024

CoverageNo articles yet

No CyberSIXT article names CVE-2023-40548 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.