Integer Overflow or Wraparound Affecting shim package, versions <15.8-150100.3.38.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.44% (36th percentile)

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  • Snyk IDSNYK-SLES152-SHIM-6729392
  • published30 Apr 2024
  • disclosed29 Apr 2024

Introduced: 29 Apr 2024

CVE-2023-40548  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.2 shim to version 15.8-150100.3.38.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim package and not the shim package as distributed by SLES. See How to fix? for SLES:15.2 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1