CVE-2024-12020
📋 TL;DR
This is a reflected cross-site scripting (XSS) vulnerability in LogicalDOC Enterprise's JSP files, allowing unauthenticated attackers to trick users into clicking malicious links that execute arbitrary scripts in their browser. It can lead to unauthorized on-site actions by victims, but session cookie theft is prevented by security flags. Only LogicalDOC Enterprise is affected.
💻 Affected Systems
- LogicalDOC Enterprise
📦 What is this software?
Logicaldoc by Logicaldoc
⚠️ Risk & Real-World Impact
Worst Case
An attacker could perform actions on behalf of the victim, such as modifying settings or data, potentially leading to data loss or unauthorized changes.
Likely Case
Attackers may use the XSS to deceive users into performing unintended actions, like submitting forms or clicking buttons, without their knowledge.
If Mitigated
With proper input validation and output encoding, the risk is reduced to minimal, as the vulnerability relies on user interaction and specific configurations.
🎯 Exploit Status
Exploitation requires user interaction (clicking a crafted link), but is straightforward for attackers with basic XSS knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided information
Vendor Advisory: https://www.blackduck.com/blog/cyrc-advisory-logicaldoc.html
Restart Required: No
Instructions:
Check the vendor advisory for updates; apply any available patches or updates as recommended by LogicalDOC.
🔧 Temporary Workarounds
Implement Input Validation and Output Encoding
allSanitize user inputs and encode outputs in JSP files to prevent XSS payloads from executing.
No specific commands; modify JSP files to use secure coding practices like OWASP guidelines.
Use Content Security Policy (CSP)
allDeploy CSP headers to restrict script execution from untrusted sources, reducing XSS impact.
Add CSP header in web server configuration, e.g., for Apache: Header set Content-Security-Policy "default-src 'self'"
For Nginx: add_header Content-Security-Policy "default-src 'self';";
🧯 If You Can't Patch
- Restrict access to the application to trusted users only, using network segmentation or authentication controls.
- Monitor and filter malicious links in web traffic, using web application firewalls (WAFs) or intrusion detection systems.
🔍 How to Verify
Check if Vulnerable:
Test by attempting to inject XSS payloads into parameters of JSP files and observing if scripts execute in the browser.Check Version:
Check the LogicalDOC version via the application's admin interface or configuration files; specific command not provided.Verify Fix Applied:
After applying fixes, retest XSS payloads to ensure they are properly sanitized and do not execute.📡 Detection & Monitoring
Log Indicators:
- Unusual or repeated requests to JSP files with suspicious parameters containing script tags or encoded payloads.
Network Indicators:
- HTTP requests with XSS patterns in query strings or headers, especially from external sources.
SIEM Query:
Example: source="web_server" AND (url="*.jsp" AND (param CONTAINS "<script>" OR param CONTAINS "javascript:"))