==========================================================================
Ubuntu Security Notice USN-6596-1
January 24, 2024
libapache-session-ldap-perl vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
Summary:
Apache::Session::LDAP could be made to expose sensitive information through
spoofing if it received invalid X.509 certificate.
Software Description:
- libapache-session-ldap-perl: Apache::Session::LDAP Perl module - Store Apache 
Session in LDAP
Details:
It was discovered that Apache::Session::LDAP incorrectly handled invalid X.509
certificates. If a user or an automated system were tricked into opening a
specially crafted invalid X.509 certificate, a remote attacker could possibly
use this issue to perform spoofing and obtain sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
   libapache-session-ldap-perl     0.4-1+deb10u1build0.20.04.1
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   libapache-session-ldap-perl     0.4-1ubuntu0.18.04.1~esm1
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   libapache-session-ldap-perl     0.4-1ubuntu0.16.04.1~esm1
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6596-1
   CVE-2020-36658
Package Information:
 https://launchpad.net/ubuntu/+source/libapache-session-ldap-perl/0.4-1+deb10u1build0.20.04.1