Files or Directories Accessible to External Parties Affecting shadow package, versions <4.8.1-150300.4.3.8


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-SLES153-SHADOW-2641125
  • published14 Apr 2022
  • disclosed4 Mar 2022

Introduced: 4 Mar 2022

CVE-2021-3996  (opens in a new tab)
CWE-552  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 shadow to version 4.8.1-150300.4.3.8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shadow package and not the shadow package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

CVSS Scores

version 3.1