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Ubuntu: (Multiple Advisories) (CVE-2021-44730): snapd regression

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Ubuntu: (Multiple Advisories) (CVE-2021-44730): snapd regression

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
02/17/2022
Created
03/25/2022
Added
02/18/2022
Modified
03/28/2022

Description

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

Solution(s)

  • ubuntu-upgrade-snap-confine
  • ubuntu-upgrade-snapd

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