Link Following Affecting libarchive package, versions <0:3.3.3-3.el8_5


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.06% (27th percentile)

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  • Snyk IDSNYK-RHEL8-LIBARCHIVE-4209084
  • published16 Dec 2021
  • disclosed22 Aug 2021

Introduced: 22 Aug 2021

CVE-2021-31566  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade RHEL:8 libarchive to version 0:3.3.3-3.el8_5 or higher.
This issue was patched in RHSA-2022:0892.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libarchive package and not the libarchive package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.

CVSS Scores

version 3.1