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


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-UBUNTU2310-SHIMSIGNED-6186916
  • published26 Apr 2024
  • disclosed29 Jan 2024

Introduced: 29 Jan 2024

CVE-2023-40550  (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 when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.

CVSS Base Scores

version 3.1