Authentication Bypass Vulnerability in Kentico Xperience CMS

What changed

Kentico has disclosed an authentication bypass vulnerability in its Xperience CMS product. This vulnerability arises from improper handling of empty SHA1 usernames during digest authentication, specifically in the Staging Sync Server password management.

As a result, attackers can exploit this flaw to gain unauthorized access to administrative functionalities, potentially compromising the integrity of the system.

Who is affected

The vulnerability impacts users of Kentico Xperience CMS, particularly those operating versions up to and including 13.0.172. Organizations relying on this platform for content management should be particularly vigilant.

This issue could affect a wide range of businesses that utilize Kentico for their web applications and digital marketing efforts.

• Kentico Xperience CMS users
• Organizations using version 13.0.172 or earlier
• Web developers and administrators managing Kentico implementations

What to do

It is imperative for affected organizations to assess their current version of Kentico Xperience CMS and apply any available patches or updates provided by the vendor. Immediate action is recommended to mitigate the risk of unauthorized access.

Additionally, organizations should review their authentication mechanisms and consider implementing additional security measures to protect sensitive administrative functions.

• Upgrade to the latest version of Kentico Xperience CMS as soon as possible.
• Review and strengthen authentication processes within the CMS.
• Monitor for any unusual administrative activity that may indicate exploitation of this vulnerability.