TeamCity - Authentication Bypass (CVE-2024-27198)

CVE-2024-27198 is a critical vulnerability in JetBrains TeamCity that allows unauthenticated attackers to bypass authentication controls and perform administrative actions.

CrowdSec has been tracking this vulnerability and its exploits since 19th of April 2024.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2024-27198 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting. Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2024-27198 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2024-27198 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Exploitation attempts have been observed targeting URLs that include both ;.jsp and /app/rest/ in their path.