CVE-2022-20658
📋 TL;DR
This vulnerability allows authenticated Advanced Users to elevate their privileges to Administrator by exploiting insufficient server-side permission validation in Cisco Unified CCMP and Unified CCDM web interfaces. Attackers can create new Administrator accounts, potentially compromising telephony and user resources across associated Unified platforms. Organizations using affected Cisco Unified Contact Center Management Portal or Domain Manager versions are at risk.
💻 Affected Systems
- Cisco Unified Contact Center Management Portal (Unified CCMP)
- Cisco Unified Contact Center Domain Manager (Unified CCDM)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of Unified Contact Center infrastructure, allowing attackers to modify telephony configurations, access sensitive user data, create backdoor accounts, and disrupt contact center operations.
Likely Case
Privileged attacker creates persistent Administrator accounts, gains unauthorized access to management functions, and potentially modifies call routing or user permissions.
If Mitigated
With proper network segmentation, strong authentication, and monitoring, impact is limited to isolated management systems with quick detection of unauthorized privilege changes.
🎯 Exploit Status
Exploitation requires valid Advanced User credentials but involves simple crafted HTTP requests. Cisco has confirmed active exploitation attempts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Cisco Unified CCMP and Unified CCDM releases 12.5(1)SU4 and later
Vendor Advisory: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ccmp-priv-esc-JzhTFLm4
Restart Required: Yes
Instructions:
1. Download appropriate patch from Cisco Software Center. 2. Backup current configuration. 3. Apply patch following Cisco Unified CCMP/CCDM upgrade procedures. 4. Restart affected services. 5. Verify fix by testing privilege escalation attempts.
🔧 Temporary Workarounds
Restrict Network Access
allLimit access to web management interface to trusted IP addresses only
Configure firewall rules to restrict access to CCMP/CCDM web interface ports (typically 443/HTTPS) to authorized management networks only
Review User Permissions
allAudit and minimize Advanced User accounts
Review all user accounts with Advanced User privileges and remove unnecessary accounts
Implement principle of least privilege for all user accounts
🧯 If You Can't Patch
- Implement strict network segmentation to isolate CCMP/CCDM systems from general network access
- Enhance monitoring for privilege escalation attempts and unusual account creation activities
🔍 How to Verify
Check if Vulnerable:
Check current version via CCMP/CCDM web interface or CLI. If running releases 12.0(1) through 12.5(1) without SU4 patch, system is vulnerable.Check Version:
From CCMP/CCDM CLI: 'show version active' or check via web interface under System > Software VersionsVerify Fix Applied:
After patching, verify version shows 12.5(1)SU4 or later. Test with Advanced User account attempting privilege escalation - should fail.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to user management endpoints
- Unexpected Administrator account creation
- Failed or successful privilege escalation attempts in application logs
- Multiple login attempts from Advanced User accounts
Network Indicators:
- HTTP requests to user management APIs from non-admin accounts
- Unusual patterns of requests to /ccmp/ or similar management endpoints
SIEM Query:
source="ccmp_logs" AND (event_type="user_creation" OR event_type="privilege_change") AND user_role="Advanced User"