In JetBrains TeamCity before version 2024.12.1, an improper access control vulnerability allows unauthorized users to see project names within the agent pool. This security flaw poses a risk as it could lead to information disclosure regarding the projects managed by the system.
The severity of this vulnerability is classified as medium, with a CVSS score of 4.3. This rating indicates a moderate level of risk to organizations utilizing affected versions of TeamCity. The potential for unauthorized access to project names could allow attackers to gather sensitive information that may be leveraged for further attacks.
Currently, there are no known public exploits or proof of concept (PoC) available for this vulnerability, which could provide a temporary reprieve for organizations. However, the lack of known exploits does not diminish the need for timely remediation.
Organizations should prioritize patching to mitigate this risk. The urgency for defenders is heightened due to the moderate impact of this vulnerability on confidentiality. Immediate action is recommended to ensure that sensitive project information remains secure.
Vulnerability Details
The vulnerability arises from improper access control mechanisms within JetBrains TeamCity. The CVSS 3.1 vector indicates that the vulnerability can be exploited over the network (AV:N), requires low complexity to exploit (AC:L), and only low privileges (PR:L) are necessary. No user interaction is required (UI:N), and the vulnerability does not affect the integrity or availability of the system, but it has a low impact on confidentiality (C:L).
The vulnerability is classified under CWE-863, which pertains to improper authorization issues. It was published on January 21, 2025, and is currently marked as analyzed.
Technical Analysis
The root cause of this vulnerability lies in the incorrect implementation of access controls, which allows unauthorized users to view sensitive project names. The attack vector is network-based, meaning that an attacker could potentially exploit this vulnerability remotely without physical access to the system.
The attack complexity is low, indicating that even attackers with minimal resources and skills could exploit this vulnerability. Attackers do not require elevated privileges to execute an attack, and user interaction is not necessary, making this vulnerability particularly concerning.
The confidentiality impact is assessed as low, meaning that while project names may be disclosed, the overall impact on the organization's data integrity and availability remains unaffected. However, this does not mitigate the potential risks associated with the unauthorized exposure of project details.
Risk & Impact Analysis
Risk to organizations includes the potential for sensitive information disclosure that could lead to further attacks or exploitation. The blast radius of this vulnerability could extend beyond the immediate project names, as attackers may piece together information that could facilitate future security breaches.
Given the CVSS score of 4.3, organizations are advised to schedule remediation as part of their priority patch cycle. Although it is not classified as critical, the moderate severity suggests that organizations should not overlook this vulnerability.
Organizations should prioritize patching immediately to address this issue, ensuring that their systems are updated to version 2024.12.1 or higher to prevent unauthorized access to project names within the agent pool.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of JetBrains TeamCity prior to version 2024.12.1 are affected by this vulnerability. Organizations using earlier versions should upgrade to the latest version to mitigate the risk associated with this weakness.
Mitigation & Remediation
Organizations should apply the latest patches available from JetBrains to remediate this vulnerability. Specifically, upgrading to TeamCity version 2024.12.1 or later is essential. In addition to patching, organizations are advised to conduct a review of their access controls to ensure that proper permissions are enforced.
If immediate patching is not feasible, consider implementing access controls that restrict visibility of project names to authorized users only. Monitoring user access and implementing logging mechanisms can also help identify any unauthorized attempts to access sensitive project information.
For thorough security validation, organizations should consider engaging in penetration testing to assess the effectiveness of their security measures.
Detection Guidance
Organizations should monitor logs for unauthorized access attempts to project names within TeamCity. Anomalies in user behavior, such as attempts to access restricted project information, should be flagged and investigated. Additionally, establishing network signatures to detect unauthorized access attempts can enhance overall security posture.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in the potential for attackers to use disclosed project names to launch further attacks or to gather intelligence on the organization’s operations. This highlights the importance of robust access control mechanisms in preventing information leakage.
Security teams should take this incident as a reminder to regularly assess and update their security policies, ensuring that all access control measures are adequately enforced. The vulnerability represents a broader trend of improper access control issues that can have significant implications.
For further reading on improving access control strategies, organizations can explore our resources on vulnerability management program, penetration testing methodology, and security testing best practices to enhance their defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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