CVE-2021-41154
📋 TL;DR
This vulnerability allows attackers with read access to SVN core repositories in Tuleap to execute arbitrary SQL queries through SQL injection. It affects Tuleap Community and Enterprise Editions before specific patched versions. Attackers could potentially read, modify, or delete database content.
💻 Affected Systems
- Tuleap Community Edition
- Tuleap Enterprise Edition
📦 What is this software?
Tuleap by Enalean
Tuleap by Enalean
Tuleap by Enalean
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, privilege escalation, or full system takeover via subsequent attacks.
Likely Case
Unauthorized data access and potential data exfiltration from Tuleap databases, including sensitive project information and user data.
If Mitigated
Limited impact with proper access controls, but still potential for data leakage from accessible database tables.
🎯 Exploit Status
Exploitation requires authenticated read access to SVN repositories. SQL injection vulnerabilities are typically straightforward to exploit once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Tuleap Community Edition 11.17.99.144, Tuleap Enterprise Edition 11.17-5, Tuleap Enterprise Edition 11.16-7
Vendor Advisory: https://github.com/Enalean/tuleap/security/advisories/GHSA-6462-gfv9-jf83
Restart Required: Yes
Instructions:
1. Backup your Tuleap instance and database. 2. Update to the patched version using your distribution's package manager or Tuleap upgrade process. 3. Restart Tuleap services. 4. Verify the update was successful.
🔧 Temporary Workarounds
Restrict SVN Repository Access
allLimit read access to SVN core repositories to only trusted users who absolutely need it.
# Use Tuleap web interface to modify repository permissions
# Navigate to Project Admin > SVN > Access Control
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Tuleap instances from sensitive systems
- Enforce principle of least privilege for all user accounts with SVN repository access
🔍 How to Verify
Check if Vulnerable:
Check Tuleap version via web interface or command line. If version is below patched versions listed above, the system is vulnerable.Check Version:
On Tuleap server: /usr/share/tuleap/src/utils/php-launcher.sh /usr/share/tuleap/src/utils/display_tuleap_version.phpVerify Fix Applied:
Verify Tuleap version is equal to or higher than the patched versions. Test SVN repository access functionality to ensure it works normally.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in database logs
- Multiple failed SVN access attempts followed by successful access
- Unexpected database operations from Tuleap application user
Network Indicators:
- Unusual database connection patterns from Tuleap application server
- Large data transfers from Tuleap database
SIEM Query:
source="tuleap_logs" AND ("SQL error" OR "database error" OR "unexpected query")🔗 References
- https://github.com/Enalean/tuleap/commit/ab12b686ced4cf233d3b15b08da008e0553eb6a6
- https://github.com/Enalean/tuleap/security/advisories/GHSA-6462-gfv9-jf83
- https://tuleap.net/plugins/git/tuleap/tuleap/stable?a=commit&h=ab12b686ced4cf233d3b15b08da008e0553eb6a6
- https://tuleap.net/plugins/tracker/?aid=16213
- https://github.com/Enalean/tuleap/commit/ab12b686ced4cf233d3b15b08da008e0553eb6a6
- https://github.com/Enalean/tuleap/security/advisories/GHSA-6462-gfv9-jf83
- https://tuleap.net/plugins/git/tuleap/tuleap/stable?a=commit&h=ab12b686ced4cf233d3b15b08da008e0553eb6a6
- https://tuleap.net/plugins/tracker/?aid=16213
