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Ubuntu Security Notice USN-5753-1

Ubuntu Security Notice USN-5753-1
Posted Dec 1, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5753-1 - 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.

tags | advisory, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2022-3328
SHA-256 | 99c4b348641a89133cbe547d4f46f163510638a094b7414195395957e465a727

Ubuntu Security Notice USN-5753-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-5753-1
December 01, 2022

snapd vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

snapd could be made to run programs as an administrator.

Software Description:
- 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:
snapd 2.57.5+22.10ubuntu0.1

Ubuntu 22.04 LTS:
snapd 2.57.5+22.04ubuntu0.1

Ubuntu 20.04 LTS:
snapd 2.57.5+20.04ubuntu0.1

Ubuntu 18.04 LTS:
snapd 2.57.5+18.04ubuntu0.1

Ubuntu 16.04 ESM:
snapd 2.54.3+16.04.0ubuntu0.1~esm5

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5753-1
CVE-2022-3328

Package Information:
https://launchpad.net/ubuntu/+source/snapd/2.57.5+22.10ubuntu0.1
https://launchpad.net/ubuntu/+source/snapd/2.57.5+22.04ubuntu0.1
https://launchpad.net/ubuntu/+source/snapd/2.57.5+20.04ubuntu0.1
https://launchpad.net/ubuntu/+source/snapd/2.57.5+18.04ubuntu0.1
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