CVE-2024-39735
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in IBM Datacap Navigator versions 9.1.5 through 9.1.9. An authenticated attacker can inject malicious JavaScript into the web interface, potentially stealing session credentials or manipulating user sessions. Only authenticated users can exploit this vulnerability.
💻 Affected Systems
- IBM Datacap Navigator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An authenticated malicious user could steal administrator credentials, hijack sessions, perform actions as other users, or deploy malware to other users' browsers.
Likely Case
An authenticated attacker with limited privileges could steal session cookies or credentials from other users, potentially escalating privileges or accessing unauthorized data.
If Mitigated
With proper input validation and output encoding, the attack would fail to execute malicious scripts, limiting impact to benign data display issues.
🎯 Exploit Status
XSS vulnerabilities typically have low exploitation complexity once the injection point is identified. Requires authenticated access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply IBM Datacap Navigator Interim Fix 9.1.9.0-ISS-IF001 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/7160185
Restart Required: Yes
Instructions:
1. Download the interim fix from IBM Fix Central. 2. Stop the Datacap Navigator service. 3. Apply the fix according to IBM documentation. 4. Restart the service. 5. Verify the fix is applied.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side input validation and output encoding for all user-supplied data in web interfaces.
Content Security Policy (CSP)
allImplement a strict Content Security Policy header to restrict script execution sources.
Add HTTP header: Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block XSS payloads
- Restrict user permissions to minimum required, reducing impact of authenticated attacks
🔍 How to Verify
Check if Vulnerable:
Check Datacap Navigator version via administrative interface or configuration files. If version is 9.1.5 through 9.1.9 without the interim fix, system is vulnerable.Check Version:
Check Datacap Navigator version in administrative web interface or configuration files (specific command varies by deployment)Verify Fix Applied:
Verify the interim fix is applied by checking version information in administrative console or patch management system.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript patterns in user input fields
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Suspicious JavaScript payloads in HTTP requests
- Unexpected outbound connections from user browsers
SIEM Query:
web_requests WHERE (url CONTAINS "datacap" AND (body CONTAINS "<script>" OR body CONTAINS "javascript:"))