Link Following Affecting bsdtar package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.06% (27th percentile)

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  • Snyk IDSNYK-CENTOS7-BSDTAR-2321471
  • published16 Dec 2021
  • disclosed21 Aug 2021

Introduced: 21 Aug 2021

CVE-2021-23177  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

There is no fixed version for Centos:7 bsdtar.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bsdtar package and not the bsdtar package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. 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 change the ACL of a file on the system and gain more privileges.

CVSS Scores

version 3.1