USN-8858-1: Authen::SASL vulnerability

Publication date

30 September 2026

Overview

Authen::SASL could be made to crash or run programs if it received specially crafted network traffic.


Packages

Details

It was discovered that Authen::SASL, a Perl authentication library, did
not properly validate login attempts. An attacker could possibly use
this issue to gain unauthorized access.

It was discovered that Authen::SASL, a Perl authentication library, did
not properly validate login attempts. An attacker could possibly use
this issue to gain unauthorized access.

Update instructions

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

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute libauthen-sasl-perl –  2.2000-1ubuntu0.1
24.04 LTS noble libauthen-sasl-perl –  2.1700-1ubuntu0.1
22.04 LTS jammy libauthen-sasl-perl –  2.1600-1.1ubuntu0.1
20.04 LTS focal libauthen-sasl-perl –  2.1600-1ubuntu0.20.04.1~esm1  
18.04 LTS bionic libauthen-sasl-perl –  2.1600-1ubuntu0.18.04.1~esm1  
16.04 LTS xenial libauthen-sasl-perl –  2.1600-1ubuntu0.16.04.1~esm1  
14.04 LTS trusty libauthen-sasl-perl –  2.1500-1ubuntu0.1~esm1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


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