CVE-2024-12755
📋 TL;DR
A Cross-Site Scripting (XSS) vulnerability in Avaya Spaces allows attackers to inject malicious scripts into web pages viewed by other users. This could lead to session hijacking, data theft, or unauthorized actions performed on behalf of victims. Organizations using vulnerable versions of Avaya Spaces are affected.
💻 Affected Systems
- Avaya Spaces
📦 What is this software?
Spaces by Avaya
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, credentials, or sensitive data from users, perform unauthorized actions in their accounts, or redirect users to malicious sites.
Likely Case
Attackers would typically steal session cookies to hijack user accounts, potentially accessing sensitive conversations, files, or contact information within Avaya Spaces.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, and even if exploited, additional security controls like Content Security Policy (CSP) could limit damage.
🎯 Exploit Status
Exploitation typically requires tricking a user into interacting with malicious content; no public exploit code is known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Avaya advisory for specific patched versions
Vendor Advisory: https://support.avaya.com/css/public/documents/101091836
Restart Required: No
Instructions:
1. Review Avaya advisory for affected versions. 2. Apply the recommended patch or update to a fixed version. 3. Verify the fix by testing the application.
🔧 Temporary Workarounds
Implement Content Security Policy (CSP)
allDeploy a strict CSP to mitigate XSS by restricting sources of executable scripts.
Add CSP headers in web server configuration, e.g., Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Isolate Avaya Spaces deployment behind a web application firewall (WAF) with XSS protection rules.
- Educate users to avoid clicking suspicious links and enable browser security features like script blockers.
🔍 How to Verify
Check if Vulnerable:
Check Avaya Spaces version against the advisory; test for XSS by attempting to inject scripts in user-input fields.Check Version:
Check Avaya Spaces admin interface or documentation for version information; no universal CLI command available.Verify Fix Applied:
After patching, retest XSS vectors to ensure scripts are properly sanitized and do not execute.📡 Detection & Monitoring
Log Indicators:
- Unusual script tags or JavaScript in HTTP requests
- Multiple failed login attempts from unexpected locations after XSS
Network Indicators:
- HTTP requests containing suspicious script payloads to Avaya Spaces endpoints
SIEM Query:
source="avaya_spaces" AND (http_request LIKE "%<script>%" OR http_request LIKE "%javascript:%")