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Ubuntu 22.04 LTS USN-6913-1 Critical: phpCAS Authentication Bypass

ubuntu
Calendar Grey July 24, 2024
Dist Ubuntu Esm H88
A vulnerability in phpCAS has been disclosed in Ubuntu Security Notice USN-6913-1. It is crucial to apply the latest updates to address potential authentication bypass vulnerabilities.
phpCAS was vulnerable to an authentication bypass.

Summary

phpCAS was vulnerable to an authentication bypass.

Software Description:

- php-cas: Central Authentication Service client library in php

Details:

Filip Hejsek discovered that phpCAS was using HTTP headers to determine

the service URL used to validate tickets. A remote attacker could

possibly use this issue to gain access to a victim's account on a

vulnerable CASified service.

This security update introduces an incompatible API change. After applying

this update, third party applications need to be modified to pass in an

additional service base URL argument when constructing the client class.

For more information please refer to the section

"Upgrading 1.5.0 -> 1.6.0" of the phpCAS upgrading document:

https://github.com/apereo/phpCAS/blob/master/docs/Upgrading

Topics%20covered

Topics Covered

security advisory critical update ubuntu authentication bypass php-cas

Update Instructions

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

Ubuntu 22.04 LTS
php-cas 1.3.8-1ubuntu0.22.04.1

Ubuntu 20.04 LTS
php-cas 1.3.8-1ubuntu0.20.04.1

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

References

https://ubuntu.com/security/notices/USN-6913-1

CVE-2022-39369

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6913-1

Topics%20covered

Topics Covered

security advisory critical update ubuntu authentication bypass php-cas

Package Information

https://launchpad.net/ubuntu/+source/php-cas/1.3.8-1ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/php-cas/1.3.8-1ubuntu0.20.04.1

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