Out-of-bounds Read Affecting shim-signed package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-UBUNTU2310-SHIMSIGNED-6186876
  • published26 Apr 2024
  • disclosed29 Jan 2024

Introduced: 29 Jan 2024

CVE-2023-40549  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:23.10 shim-signed.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim-signed package and not the shim-signed package as distributed by Ubuntu. See How to fix? for Ubuntu:23.10 relevant fixed versions and status.

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.

CVSS Base Scores

version 3.1