CVE-2021-43851
📋 TL;DR
CVE-2021-43851 is an SQL injection vulnerability in Anuko Time Tracker that allows attackers to execute arbitrary SQL commands via the 'group' and 'status' parameters in POST requests. This affects all users of Time Tracker version 1.19.33.5606 and prior. Successful exploitation could lead to data theft, modification, or deletion.
💻 Affected Systems
- Anuko Time Tracker
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including theft of sensitive user data, credential extraction, and potential remote code execution if database permissions allow.
Likely Case
Unauthorized data access and manipulation of time tracking records, user accounts, and organizational data.
If Mitigated
Limited impact with proper input validation and database permission restrictions.
🎯 Exploit Status
Exploitation requires authenticated access but SQL injection via POST parameters is straightforward for attackers with valid credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.19.33.5607
Vendor Advisory: https://github.com/anuko/timetracker/security/advisories/GHSA-wx6x-6rq3-pqcc
Restart Required: No
Instructions:
1. Backup your current installation and database. 2. Download version 1.19.33.5607 or later from the official repository. 3. Replace all files with the patched version. 4. Verify the ttValidStatus and ttValidInteger functions are present in the codebase.
🔧 Temporary Workarounds
Input Validation Functions
allManually implement the ttValidStatus and ttValidInteger functions from the patched version to validate user inputs.
Copy functions from: https://github.com/anuko/timetracker/commit/0cf32f1046418aa2e5218b0b370064820c330c6a
Apply to all files using status and group parameters
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block SQL injection patterns in POST parameters
- Restrict database user permissions to minimum required operations
🔍 How to Verify
Check if Vulnerable:
Check if your version is 1.19.33.5606 or earlier by examining the version.php file or checking the admin interface.Check Version:
grep -r "define('APP_VERSION'" /path/to/timetracker/ or check admin dashboardVerify Fix Applied:
Verify version is 1.19.33.5607 or later and confirm ttValidStatus and ttValidInteger functions exist in the codebase.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by POST requests with SQL-like patterns in parameters
Network Indicators:
- POST requests to groups.php or other endpoints with SQL injection payloads in parameters
SIEM Query:
source="web_server" AND (method="POST" AND (uri="*groups.php*" OR parameters CONTAINS "' OR '1'='1" OR parameters CONTAINS "UNION SELECT"))🔗 References
- https://github.com/anuko/timetracker/commit/0cf32f1046418aa2e5218b0b370064820c330c6a
- https://github.com/anuko/timetracker/commit/94fda0cc0c9c20ab98d38ccc75ff040d13dc7f1b
- https://github.com/anuko/timetracker/security/advisories/GHSA-wx6x-6rq3-pqcc
- https://github.com/anuko/timetracker/commit/0cf32f1046418aa2e5218b0b370064820c330c6a
- https://github.com/anuko/timetracker/commit/94fda0cc0c9c20ab98d38ccc75ff040d13dc7f1b
- https://github.com/anuko/timetracker/security/advisories/GHSA-wx6x-6rq3-pqcc
