CVE-2025-54532
📋 TL;DR
This vulnerability in JetBrains TeamCity allows unauthorized users to access sensitive build configuration settings through snapshot dependencies. It affects organizations using TeamCity for CI/CD pipelines where improper access controls could expose internal build parameters, credentials, or deployment details. The impact is limited to information disclosure rather than system compromise.
💻 Affected Systems
- JetBrains TeamCity
📦 What is this software?
Teamcity by Jetbrains
⚠️ Risk & Real-World Impact
Worst Case
Attackers could extract sensitive build configuration data including API keys, database credentials, deployment secrets, and internal infrastructure details, potentially enabling further attacks on the software supply chain.
Likely Case
Unauthorized users within the organization or external attackers with some access could view build settings they shouldn't have access to, potentially exposing development environment details and configuration secrets.
If Mitigated
With proper network segmentation and access controls, the impact is limited to information disclosure within authorized user groups, with no system compromise or data modification.
🎯 Exploit Status
Exploitation requires some level of access to TeamCity. The vulnerability involves accessing snapshot dependencies to view build settings that should be restricted.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.07 or later
Vendor Advisory: https://www.jetbrains.com/privacy-security/issues-fixed/
Restart Required: Yes
Instructions:
1. Backup your TeamCity installation and database. 2. Download TeamCity 2025.07 or later from the JetBrains website. 3. Stop the TeamCity server. 4. Install the new version following JetBrains upgrade documentation. 5. Restart the TeamCity server. 6. Verify the upgrade was successful.
🔧 Temporary Workarounds
Restrict Snapshot Dependency Access
allTemporarily restrict or disable snapshot dependencies for sensitive build configurations
Navigate to Build Configuration Settings > Dependencies > Snapshot Dependencies and review/restrict access
Enhance Access Controls
allImplement stricter role-based access controls for build configurations
Review and tighten project and build configuration permissions in TeamCity administration
🧯 If You Can't Patch
- Implement network segmentation to isolate TeamCity instances from untrusted networks
- Enhance monitoring and logging for unauthorized access attempts to build configurations
🔍 How to Verify
Check if Vulnerable:
Check TeamCity version in Administration → Server Administration → Server Health → VersionCheck Version:
Check TeamCity web interface or server logs for version informationVerify Fix Applied:
Verify version is 2025.07 or later and test that unauthorized users cannot access build settings via snapshot dependencies📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to snapshot dependencies
- Unusual pattern of build configuration views
Network Indicators:
- Unusual API calls to build configuration endpoints
- Requests to snapshot dependency endpoints from unauthorized sources
SIEM Query:
source="teamcity" AND (event="access_denied" OR event="unauthorized_access") AND (resource="snapshot_dependency" OR resource="build_config")