CVE-2023-26261
📋 TL;DR
This vulnerability in UBIKA WAAP Gateway/Cloud allows attackers to bypass authentication by stealing another user's session through blind XPath injection. It affects all versions through 6.10, enabling unauthorized access to protected resources. Organizations using affected UBIKA WAAP products are at risk.
💻 Affected Systems
- UBIKA WAAP Gateway
- UBIKA WAAP Cloud
📦 What is this software?
Waap Cloud by Ubikasec
Waap Cloud by Ubikasec
Waap Cloud by Ubikasec
Waap Gateway by Ubikasec
Waap Gateway by Ubikasec
Waap Gateway by Ubikasec
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with administrative access, data exfiltration, and lateral movement within the network.
Likely Case
Unauthorized access to sensitive applications and data protected by the WAAP gateway, potentially leading to data breaches.
If Mitigated
Limited impact with proper network segmentation and additional authentication layers preventing lateral movement.
🎯 Exploit Status
Public proof-of-concept exists in GitHub gist, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: WAAP Gateway & Cloud 6.11.0 or 6.5.6-patch15
Vendor Advisory: https://documentation.ubikasec.com/x/CQDAAw
Restart Required: Yes
Instructions:
1. Download patch from UBIKA support portal. 2. Backup current configuration. 3. Apply patch following vendor instructions. 4. Restart WAAP services. 5. Verify version update.
🔧 Temporary Workarounds
Network Isolation
linuxRestrict access to WAAP management interface to trusted IP addresses only
iptables -A INPUT -p tcp --dport [WAAP_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [WAAP_PORT] -j DROP
🧯 If You Can't Patch
- Implement additional authentication layer (MFA) for all applications behind WAAP
- Deploy WAF rules to detect and block XPath injection patterns
🔍 How to Verify
Check if Vulnerable:
Check WAAP version via admin interface or CLI. If version is 6.10 or earlier, system is vulnerable.Check Version:
ubika-cli version or check admin dashboardVerify Fix Applied:
Confirm version is 6.11.0 or 6.5.6-patch15 or later via admin interface or version check command.📡 Detection & Monitoring
Log Indicators:
- Unusual XPath queries in WAAP logs
- Multiple failed authentication attempts followed by successful login from different IP
- Session ID anomalies
Network Indicators:
- Unusual XML payloads to WAAP endpoints
- Requests with crafted XPath expressions
SIEM Query:
source="waap" AND ("xpath" OR "session" OR "authentication") AND status="success"