CVE-2021-43806
📋 TL;DR
CVE-2021-43806 is an SQL injection vulnerability in Tuleap's CVS repository browsing functionality. Authenticated users with read access to CVS repositories can execute arbitrary SQL queries, potentially leading to data theft, modification, or system compromise. Only Tuleap instances with active CVS repositories are affected.
💻 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 allowing data exfiltration, privilege escalation, and potential remote code execution on the underlying server.
Likely Case
Unauthorized access to sensitive project data, user information, and potential lateral movement within the database.
If Mitigated
Limited to authenticated users with CVS repository access; proper input validation and parameterized queries prevent exploitation.
🎯 Exploit Status
Requires authenticated user with read access to a CVS repository. SQL injection is a well-understood attack vector.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Tuleap Community Edition 13.2.99.155, Tuleap Enterprise Edition 13.1-7, or Tuleap Enterprise Edition 13.2-6
Vendor Advisory: https://github.com/Enalean/tuleap/security/advisories/GHSA-x8fr-8gvw-cc4v
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 fix is applied.
🔧 Temporary Workarounds
Disable CVS repositories
allTemporarily disable CVS repository functionality if not needed
# Edit Tuleap configuration to disable CVS
# Specific commands depend on Tuleap installation method
Restrict CVS repository access
allLimit CVS repository access to only trusted users
# Use Tuleap's permission system to restrict access
# Review and tighten user permissions for CVS repositories
🧯 If You Can't Patch
- Disable CVS repositories entirely if not required for operations
- Implement strict network segmentation and limit access to Tuleap instance to only trusted users
🔍 How to Verify
Check if Vulnerable:
Check if Tuleap version is below patched versions and CVS repositories are enabledCheck Version:
tuleap info | grep 'Tuleap version' or check /etc/tuleap/conf/local.incVerify Fix Applied:
Verify Tuleap version is at or above patched versions and test CVS repository functionality📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by CVS repository access
- Unexpected database connections from Tuleap application
Network Indicators:
- Unusual database traffic patterns from Tuleap server
- Multiple SQL error responses
SIEM Query:
source="tuleap_logs" AND ("SQL error" OR "database error" OR "CVS repository" AND suspicious_pattern)🔗 References
- https://github.com/Enalean/tuleap/commit/b82be896b00a787ed46a77bd4700e8fccfe2e5ba
- https://github.com/Enalean/tuleap/security/advisories/GHSA-x8fr-8gvw-cc4v
- https://tuleap.net/plugins/git/tuleap/tuleap/stable?a=commit&h=b82be896b00a787ed46a77bd4700e8fccfe2e5ba
- https://tuleap.net/plugins/tracker/?aid=24202
- https://github.com/Enalean/tuleap/commit/b82be896b00a787ed46a77bd4700e8fccfe2e5ba
- https://github.com/Enalean/tuleap/security/advisories/GHSA-x8fr-8gvw-cc4v
- https://tuleap.net/plugins/git/tuleap/tuleap/stable?a=commit&h=b82be896b00a787ed46a77bd4700e8fccfe2e5ba
- https://tuleap.net/plugins/tracker/?aid=24202
