Severity: High
Title: Ubiquiti UniFi: remote code execution via bundled log4j
Date: October 26, 2023
Bugs: #828853
ID: 202310-16

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Synopsis
=======
A vulnerability has been discovered in unifi where bundled log4j can
facilitate a remote code execution

Background
=========
Ubiquiti UniFi is a Management Controller for Ubiquiti Networks UniFi
APs.

Affected packages
================
Package Vulnerable Unaffected
------------------ ------------ ------------
net-wireless/unifi < 6.5.55 >= 6.5.55

Description
==========
A bundled version of log4j could facilitate remote code execution.
Please review the CVE identifier referenced below for details.

Impact
=====
An attacker with permission to modify the logging configuration file can
construct a malicious configuration using a JDBC Appender with a data
source referencing a JNDI URI which can execute remote code.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Ubiquity UniFi users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-wireless/unifi-6.5.55"

References
=========
[ 1 ] CVE-2021-4104
https://nvd.nist.gov/vuln/detail/CVE-2021-4104
[ 2 ] CVE-2021-45046
https://nvd.nist.gov/vuln/detail/CVE-2021-45046

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202310-16

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2023 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5