CVE-2021-1365
📋 TL;DR
This vulnerability allows authenticated remote attackers to perform SQL injection attacks on Cisco Unified Communications Manager IM & Presence Service via its web-based management interface. It affects systems running vulnerable versions of the software, potentially enabling data theft or manipulation in the underlying database. Attackers must have valid credentials to exploit this flaw.
💻 Affected Systems
- Cisco Unified Communications Manager IM & Presence Service
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could fully compromise the database, leading to data exfiltration, unauthorized data modification, or complete system takeover.
Likely Case
Attackers with valid credentials could extract sensitive information or alter configuration data, disrupting services.
If Mitigated
With proper input validation and patching, the risk is minimized, though residual threats may exist from credential misuse.
🎯 Exploit Status
Exploitation requires authenticated access, making it dependent on credential availability or compromise.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Cisco Security Advisory for specific fixed versions.
Vendor Advisory: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imp-inj-ereCOKjR
Restart Required: Yes
Instructions:
1. Review the Cisco Security Advisory for affected versions. 2. Download and apply the recommended patch from Cisco. 3. Restart the service or system as required. 4. Verify the patch installation.
🔧 Temporary Workarounds
Restrict Access to Management Interface
allLimit network access to the web-based management interface to trusted IP addresses only.
Use firewall rules to block unauthorized IPs, e.g., iptables -A INPUT -s <trusted_ip> -p tcp --dport <port> -j ACCEPT
iptables -A INPUT -p tcp --dport <port> -j DROP
🧯 If You Can't Patch
- Implement strict input validation and sanitization at the application layer to block SQL injection attempts.
- Enforce strong authentication mechanisms and monitor for suspicious login activities to reduce credential misuse risk.
🔍 How to Verify
Check if Vulnerable:
Check the system version against the affected versions listed in the Cisco Security Advisory.Check Version:
Use Cisco CLI commands specific to the product, e.g., 'show version' or check via the web interface.Verify Fix Applied:
Confirm the system is running a patched version as specified in the advisory and test for SQL injection vulnerabilities.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed login attempts followed by SQL injection patterns
Network Indicators:
- Suspicious HTTP POST requests with SQL syntax to the management interface
SIEM Query:
Example: search 'web_interface_logs' where request contains 'SELECT', 'UNION', or other SQL keywords from untrusted sources.