CVE-2024-23917
Published: 06 February 2024
Summary
CVE-2024-23917 is a critical-severity Authentication Bypass Using an Alternate Path or Channel (CWE-288) vulnerability in Jetbrains Teamcity. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 1.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
In JetBrains TeamCity versions prior to 2023.11.3, an authentication bypass vulnerability allows remote attackers to reach critical functions without credentials. The flaw is tracked under CVE-2024-23917 with a CVSS score of 9.8 and maps to CWE-288 and CWE-306, indicating missing or bypassable authentication controls that can lead directly to remote code execution.
Unauthenticated attackers with network access can exploit the issue to execute arbitrary code on the TeamCity server, resulting in full compromise of confidentiality, integrity, and availability. No user interaction or privileges are required, making the attack surface broad for any exposed instance.
JetBrains has addressed the problem in the referenced security advisory, which directs administrators to upgrade to TeamCity 2023.11.3 or later. The advisory page lists the fixed issues and confirms the patch eliminates the authentication bypass path.
EPSS scores for this CVE rose sharply from lower values to a peak of 0.9442 on 2026-01-13 before receding to the current 0.7292, indicating increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-21347
Vulnerability details
In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mandates additional authentication for access under defined conditions, ensuring critical or high-risk functions are not left without authentication.
Identity providers mandate authentication for functions that would otherwise lack it.
Requires authentication for non-organizational users, preventing access to critical functions without proper identification and authentication.
Requires established identification and authentication to unlock, mitigating missing authentication for continued system access.
Requiring identification and rationale for actions allowed without authentication ensures critical functions are not left unprotected by forcing review of authentication requirements.
Authorizing remote access reduces the ability to bypass authentication via unauthorized alternate remote channels.
Authorizing mobile device connections to organizational systems ensures authentication is performed for this critical access function.
Guarantees critical functions are protected by mandatory invocation of the access control mechanism.