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Ubuntu 26.04 Authen-SASL Major Network Vulnerability Report USN-8858

Ubuntu 26.04 Authen-SASL Major Network Vulnerability Report USN-8858

Linuxsecurity •LinuxSecurity Advisories • September 30, 2026

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Authen::SASL could be made to crash or run programs if it received specially crafted network traffic. Software Description: - libauthen-sasl-perl: Perl library for performing SASL authentication 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.

Authen::SASL could be made to crash or run programs if it received

specially crafted network traffic.

Software Description:

- libauthen-sasl-perl: Perl library for performing SASL authentication

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.

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS libauthen-sasl-perl 2.2000-1ubuntu0.1 Ubuntu 24.04 LTS libauthen-sasl-perl 2.1700-1ubuntu0.1 Ubuntu 22.04 LTS libauthen-sasl-perl 2.1600-1.1ubuntu0.1 Ubuntu 20.04 LTS libauthen-sasl-perl 2.1600-1ubuntu0.20.04.1~esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS libauthen-sasl-perl 2.1600-1ubuntu0.18.04.1~esm1 Available with Ubuntu Pro Ubuntu 16.04 LTS libauthen-sasl-perl 2.1600-1ubuntu0.16.04.1~esm1 Available with Ubuntu Pro Ubuntu 14.04 LTS libauthen-sasl-perl 2.1500-1ubuntu0.1~esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

Ubuntu Security Notice USN-8858-1

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