Link Following Affecting snapd package, versions <2.54.3+20.04


Severity

Recommended
0.0
high
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-UBUNTU2004-SNAPD-2404777
  • published18 Feb 2022
  • disclosed17 Feb 2022

Introduced: 17 Feb 2022

CVE-2021-44730  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 snapd to version 2.54.3+20.04 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream snapd package and not the snapd package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

CVSS Scores

version 3.1