Horizon Alert
Summary of the vulnerability and why it matters
The Kentico Xperience Staging Sync Server contains a flaw in how it handles specific username formats during digest authentication. This weakness can allow unauthorized access to the system. If exploited, an attacker could gain control over administrative functions and data within the Kentico Xperience environment.
- Kentico Xperience Staging Sync Server
- Improper handling of empty usernames in authentication
- Unauthorized control of administrative objects
Attack Path
How an attacker could exploit the issue
An unauthenticated attacker could bypass authentication to gain control of administrative objects within Kentico Xperience. This vulnerability arises from how the Staging Sync Server handles empty SHA1 usernames during digest authentication. Successful exploitation could lead to significant business risk by allowing unauthorized access and manipulation of critical administrative functions and data.
- External network access to the Staging Sync Server.
- Attacker bypasses authentication.
- Control of administrative objects.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in Kentico Xperience could allow an attacker to bypass authentication and gain control over administrative objects. The issue stems from how the Staging Sync Server handles empty SHA1 usernames during digest authentication. Exploitation could lead to unauthorized administrative access and potential disruption of content management operations. Organizations using the affected versions should consider this a high-priority security concern.
- Likely attacker skill level: Low.
- Required access or conditions: None.
- Business risk or urgency: High.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability in Kentico Xperience could allow an attacker to bypass authentication and control administrative objects. The Staging Sync Server's handling of empty SHA1 usernames in digest authentication is the root cause. This could lead to significant business risk by allowing unauthorized access to critical administrative functions.
- Identify all Kentico Xperience assets.
- Reduce exposure and isolate affected systems.
- Apply vendor fixes, verify, and monitor.
