Out-of-Bounds Affecting libsepol-utils package, versions <0:3.4-3.amzn2022.0.2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.07% (34th percentile)

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  • Snyk IDSNYK-AMZN2022-LIBSEPOLUTILS-3162351
  • published8 Dec 2022
  • disclosed1 Jul 2021

Introduced: 1 Jul 2021

CVE-2021-36087  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2022 libsepol-utils to version 0:3.4-3.amzn2022.0.2 or higher.
This issue was patched in ALAS2022-2022-208.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsepol-utils package and not the libsepol-utils package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2022 relevant fixed versions and status.

The CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmap_match_any (called indirectly from cil_check_neverallow). This occurs because there is sometimes a lack of checks for invalid statements in an optional block.

CVSS Scores

version 3.1