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. In addition, according to the CrowdSec network, attack volume against CVE-2024-27198 has dipped slightly compared to the previous week. Although still commonly targeted, the decline suggests a cooling-off period. Long-term relevance remains, but attention is waning.

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