CVE-2025-20123
📋 TL;DR
This CVE describes multiple cross-site scripting (XSS) vulnerabilities in Cisco Crosswork Network Controller's web management interface. An authenticated attacker with administrative credentials could inject malicious scripts to execute arbitrary code in users' browsers or steal sensitive information. Only systems running vulnerable versions of Cisco Crosswork Network Controller are affected.
💻 Affected Systems
- Cisco Crosswork Network Controller
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with administrative credentials could execute arbitrary JavaScript in the context of authenticated users, potentially stealing session tokens, performing actions as the user, or compromising the entire management interface.
Likely Case
An authenticated malicious insider or compromised admin account could steal sensitive information from other administrators' sessions or perform unauthorized configuration changes.
If Mitigated
With proper access controls, network segmentation, and admin credential protection, the impact is limited to potential session hijacking within the management interface.
🎯 Exploit Status
Exploitation requires valid administrative credentials; XSS payloads would need to be crafted for specific vulnerable input fields
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Cisco advisory for specific fixed versions
Vendor Advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xwork-xss-KCcg7WwU
Restart Required: Yes
Instructions:
1. Review Cisco advisory for affected versions. 2. Download and install the latest patched version from Cisco. 3. Restart the Crosswork Network Controller. 4. Verify the update was successful.
🔧 Temporary Workarounds
No workarounds available
allCisco states there are no workarounds for these vulnerabilities
🧯 If You Can't Patch
- Implement strict access controls to limit administrative access to trusted users only
- Monitor administrative user activity and session behavior for anomalies
🔍 How to Verify
Check if Vulnerable:
Check current version against affected versions listed in Cisco advisoryCheck Version:
Check via Crosswork Network Controller web interface or CLI (specific command varies by version)Verify Fix Applied:
Verify installed version matches or exceeds the patched version specified in Cisco advisory📡 Detection & Monitoring
Log Indicators:
- Unusual administrative user activity
- Multiple failed login attempts followed by successful login
- Suspicious input patterns in web interface logs
Network Indicators:
- Unusual traffic patterns to/from management interface
- Requests containing suspicious JavaScript or HTML payloads
SIEM Query:
source="crosswork_controller" AND (event_type="admin_login" OR event_type="input_validation") AND (message="*script*" OR message="*javascript*" OR message="*onerror*" OR message="*onload*")