CVE-2021-28142
📋 TL;DR
CVE-2021-28142 is a SQL injection vulnerability in CITSmart ITSM's autocomplete filter feature. Attackers can exploit this to execute arbitrary SQL commands on the database. Organizations running affected CITSmart versions are vulnerable.
💻 Affected Systems
- CITSmart ITSM
📦 What is this software?
Citsmart by Citsmart
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise allowing data theft, modification, deletion, or potential remote code execution on the database server.
Likely Case
Unauthorized data access, privilege escalation, and potential extraction of sensitive information like user credentials or business data.
If Mitigated
Limited impact with proper input validation, parameterized queries, and database permission restrictions in place.
🎯 Exploit Status
Exploit details are publicly available via Packet Storm Security. Requires some authentication level but SQL injection is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.1.2.28 or later
Vendor Advisory: https://docs.citsmart.com/pt-br/citsmart-platform-9/get-started/about-citsmart/release-notes.html
Restart Required: Yes
Instructions:
1. Backup your CITSmart installation and database. 2. Download version 9.1.2.28 or later from official CITSmart sources. 3. Follow CITSmart upgrade documentation. 4. Restart application services. 5. Verify the fix by testing the autocomplete filter.
🔧 Temporary Workarounds
Disable Autocomplete Filter
allTemporarily disable the vulnerable autocomplete filter feature until patching is possible.
Web Application Firewall Rules
allImplement WAF rules to block SQL injection patterns targeting the autocomplete endpoint.
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries for all autocomplete filter inputs.
- Restrict database user permissions to minimum required privileges and implement network segmentation.
🔍 How to Verify
Check if Vulnerable:
Check CITSmart version via admin interface. If version is below 9.1.2.28, the system is vulnerable.Check Version:
Check via CITSmart admin dashboard or application configuration files.Verify Fix Applied:
After upgrading to 9.1.2.28 or later, test the autocomplete filter with SQL injection payloads to confirm they are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed autocomplete requests with SQL syntax
- Database error messages in application logs
Network Indicators:
- HTTP POST requests to autocomplete endpoints containing SQL keywords
- Unusual database connection patterns from application server
SIEM Query:
source="citsmart.logs" AND ("autocomplete" AND ("SELECT", "UNION", "OR 1=1", "--"))🔗 References
- http://packetstormsecurity.com/files/162182/CITSmart-ITSM-9.1.2.27-SQL-Injection.html
- https://docs.citsmart.com/pt-br/citsmart-platform-9/get-started/about-citsmart/release-notes.html
- http://packetstormsecurity.com/files/162182/CITSmart-ITSM-9.1.2.27-SQL-Injection.html
- https://docs.citsmart.com/pt-br/citsmart-platform-9/get-started/about-citsmart/release-notes.html
