Alerts This Week
Warning Icon 1 758
Alerts This Week
Warning Icon 1 758

Ubuntu 16.04 LTS USN-6913-2: phpCAS Authentication Bypass Fix

ubuntu
Calendar Grey July 31, 2024
Dist Ubuntu Esm H88
Ubuntu 16.04 LTS has an urgent security patch addressing the phpCAS flaw that enables bypassing authentication. Ensure your system is updated immediately!
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:

USN-6913-1 fixed CVE-2022-39369 for Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

This update provides the corresponding fix for Ubuntu 16.04 LTS.

Original advisory 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 package update software issue ubuntu authentication bypass php-cas

Update Instructions

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

Ubuntu 16.04 LTS
php-cas 1.3.3-2ubuntu1+esm1
Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-6913-2

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

CVE-2022-39369

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6913-2

Topics%20covered

Topics Covered

security advisory package update software issue ubuntu authentication bypass php-cas

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here