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Ubuntu Security Notice USN-6169-1
June 15, 2023

gsasl vulnerability

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

• Ubuntu 22.04 LTS (Available with Ubuntu Pro)
• Ubuntu 20.04 LTS (Available with Ubuntu Pro)
• Ubuntu 18.04 LTS (Available with Ubuntu Pro)
• Ubuntu 16.04 LTS (Available with Ubuntu Pro)
• Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

gsasl could possibly be made crash or expose sensitive information
over the network.

Software Description:

• gsasl: GNU SASL command line utility

Details:

It was discovered that GNU SASL’s GSSAPI server could make an
out-of-bounds reads if given specially crafted GSS-API authentication
data. A remote attacker could possibly use this issue to cause a
denial of service or to expose sensitive information.

Update instructions:

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

Ubuntu 22.04 LTS (Available with Ubuntu Pro):
gsasl 1.10.0-5ubuntu0.1~esm1

Ubuntu 20.04 LTS (Available with Ubuntu Pro):
gsasl 1.8.1-1ubuntu0.1~esm1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
gsasl 1.8.0-8ubuntu3+esm2

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
gsasl 1.8.0-8ubuntu2+esm1

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
gsasl 1.8.0-2ubuntu2+esm1

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

References:
https://ubuntu.com/security/notices/USN-6169-1
CVE-2022-2469