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AUSCERT External Security Bulletin Redistribution
ESB-2022.6277
USN-5753-1: snapd vulnerability
2 December 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: snapd
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-3328
Original Bulletin:
https://ubuntu.com/security/notices/USN-5753-1
Comment: CVSS (Max): None available when published
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USN-5753-1: snapd vulnerability
1 December 2022
snapd could be made to run programs as an administrator.
Releases
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 ESM
Packages
o snapd - Daemon and tooling that enable snap packages
Details
The Qualys Research Team discovered that a race condition existed in the
snapd snap-confine binary when preparing the private /tmp mount for a
snap. A local attacker could possibly use this issue to escalate privileges
and execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 22.10
o snapd - 2.57.5+22.10ubuntu0.1
Ubuntu 22.04
o snapd - 2.57.5+22.04ubuntu0.1
Ubuntu 20.04
o snapd - 2.57.5+20.04ubuntu0.1
Ubuntu 18.04
o snapd - 2.57.5+18.04ubuntu0.1
Ubuntu 16.04
o snapd - 2.54.3+16.04.0ubuntu0.1~esm5
Available with Ubuntu Pro (Infra-only)
In general, a standard system update will make all the necessary changes.
References
o CVE-2022-3328
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