CVE-2024-41827: 
JetBrains TeamCity vulnerability analysis and mitigation

A high-severity security vulnerability (CVE-2024-41827) was discovered in JetBrains TeamCity versions before 2024.07. The vulnerability relates to access token management where tokens could continue functioning even after being deleted or reaching their expiration date (Security Online).

The vulnerability stems from a flaw in TeamCity's token management system, identified as CWE-613 (Insufficient Session Expiration). It received a CVSS v3.1 base score of 9.8 (CRITICAL) from NIST with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, while JetBrains assessed it with a score of 7.4 (HIGH) and vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N (NVD).

The vulnerability could allow attackers to maintain unauthorized access to critical development environments, including sensitive projects, source code, build configurations, and connected version control systems. This poses a significant threat to the software supply chain, potentially enabling attackers to inject malicious code into software builds that could be distributed to end users (Security Online).

JetBrains has addressed the vulnerability in TeamCity version 2024.07. Organizations are advised to update their systems immediately, revoke and reissue all existing access tokens, review access logs for suspicious activity, and implement additional security measures such as multi-factor authentication (MFA) for TeamCity users (Security Online).