CVE-2022-25264
📋 TL;DR
This vulnerability in JetBrains TeamCity allows environment variables marked as 'password' type to be logged in certain cases, potentially exposing sensitive credentials. It affects TeamCity installations before version 2021.2.3. Organizations using vulnerable versions could have authentication secrets leaked in log files.
💻 Affected Systems
- JetBrains TeamCity
📦 What is this software?
Teamcity by Jetbrains
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain access to password environment variables through exposed logs, leading to credential theft, unauthorized access to TeamCity systems, and potential lateral movement to connected systems.
Likely Case
Sensitive passwords appear in log files accessible to administrators or attackers with log access, compromising security of the affected TeamCity instance and potentially connected services.
If Mitigated
With proper log access controls and monitoring, exposure is limited to authorized personnel only, reducing risk of credential misuse.
🎯 Exploit Status
Exploitation requires access to log files where passwords may be recorded. No authentication bypass needed if logs are accessible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2021.2.3 and later
Vendor Advisory: https://www.jetbrains.com/privacy-security/issues-fixed/
Restart Required: Yes
Instructions:
1. Backup TeamCity configuration and data. 2. Download TeamCity 2021.2.3 or later from JetBrains website. 3. Stop TeamCity service. 4. Install the updated version. 5. Restart TeamCity service. 6. Verify functionality.
🔧 Temporary Workarounds
Restrict Log Access
linuxLimit access to TeamCity log files to authorized administrators only.
chmod 600 /path/to/teamcity/logs/*
setfacl -m u:teamcityadmin:r /path/to/teamcity/logs/
Disable Password Logging
allReview and remove password environment variables from configurations that trigger logging.
🧯 If You Can't Patch
- Implement strict access controls on TeamCity log directories and files
- Monitor log files for password strings and implement alerting for suspicious access
🔍 How to Verify
Check if Vulnerable:
Check TeamCity version via web interface Admin → Server Administration → Server Health → Version, or check teamcity-server.log for version information.Check Version:
grep 'TeamCity' /path/to/teamcity/logs/teamcity-server.log | head -5Verify Fix Applied:
Confirm version is 2021.2.3 or later and search logs for password environment variables to ensure they are no longer exposed.📡 Detection & Monitoring
Log Indicators:
- Password environment variables appearing in clear text in TeamCity logs
- Unexpected access patterns to log files
Network Indicators:
- Unusual authentication attempts using credentials that may have been exposed
SIEM Query:
source="teamcity.logs" AND "password" AND NOT "[MASKED]"