Access Restriction Bypass Affecting acl package, versions <2.2.49-2


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.33% (25th percentile)

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  • Snyk IDSNYK-DEBIAN11-ACL-517753
  • published24 Dec 2009
  • disclosed24 Dec 2009

Introduced: 24 Dec 2009

CVE-2009-4411  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade Debian:11 acl to version 2.2.49-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream acl package and not the acl package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

The (1) setfacl and (2) getfacl commands in XFS acl 2.2.47, when running in recursive (-R) mode, follow symbolic links even when the --physical (aka -P) or -L option is specified, which might allow local users to modify the ACL for arbitrary files or directories via a symlink attack.

CVSS Base Scores

version 3.1