Rapid7 Vulnerability & Exploit Database

Ubuntu: (Multiple Advisories) (CVE-2021-44731): snapd regression

Back to Search

Ubuntu: (Multiple Advisories) (CVE-2021-44731): 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

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)

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

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;