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Debian: CVE-2021-44731: snapd -- security update

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Debian: CVE-2021-44731: snapd -- security update

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
02/17/2022
Created
02/24/2022
Added
02/23/2022
Modified
03/03/2022

Description

A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code 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)

  • debian-upgrade-snapd

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