CVE-2025-68162
📋 TL;DR
This vulnerability in JetBrains TeamCity allows attackers to load malicious extensions via Maven embedder through project configuration. It affects TeamCity instances with Maven build configurations. The impact is limited to users who can modify project configurations.
💻 Affected Systems
- JetBrains TeamCity
📦 What is this software?
Teamcity by Jetbrains
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could load malicious extensions leading to arbitrary code execution within the TeamCity server context.
Likely Case
Limited privilege escalation within TeamCity environment, potentially allowing unauthorized build modifications or data access.
If Mitigated
Minimal impact with proper access controls and project configuration restrictions in place.
🎯 Exploit Status
Requires authenticated access to TeamCity and knowledge of Maven configuration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.11 or later
Vendor Advisory: https://www.jetbrains.com/privacy-security/issues-fixed/
Restart Required: Yes
Instructions:
1. Download TeamCity 2025.11 or later from JetBrains website. 2. Backup current installation. 3. Stop TeamCity service. 4. Install new version. 5. Restart TeamCity service. 6. Verify upgrade completed successfully.
🔧 Temporary Workarounds
Restrict project configuration access
allLimit which users can modify Maven project configurations to trusted administrators only.
Disable Maven embedder if unused
allRemove or disable Maven build configurations if not required for your workflow.
🧯 If You Can't Patch
- Implement strict access controls on project configuration permissions
- Monitor for unusual Maven extension loading or configuration changes
🔍 How to Verify
Check if Vulnerable:
Check TeamCity version in Administration → Server Administration → Global Settings. If version is earlier than 2025.11, system is vulnerable.Check Version:
Check TeamCity web interface at Administration → Server Administration → Global SettingsVerify Fix Applied:
After upgrade, verify version shows 2025.11 or later in Administration → Server Administration → Global Settings.📡 Detection & Monitoring
Log Indicators:
- Unusual Maven extension loading
- Unexpected project configuration changes
- Authentication logs showing unauthorized configuration access attempts
Network Indicators:
- Unusual outbound connections from TeamCity server during builds
- Unexpected Maven repository connections
SIEM Query:
source="teamcity" AND ("extension load" OR "maven embedder" OR "project configuration modified")