CVE-2024-54046
📋 TL;DR
This reflected Cross-Site Scripting (XSS) vulnerability in Adobe Connect allows attackers to execute malicious JavaScript in victims' browsers by tricking them into clicking specially crafted URLs. Unauthenticated attackers can target users of vulnerable Adobe Connect versions, potentially stealing session cookies, redirecting users, or performing actions on their behalf.
💻 Affected Systems
- Adobe Connect
📦 What is this software?
Connect by Adobe
Connect by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, gain unauthorized access to the Adobe Connect instance, manipulate meetings, access sensitive participant data, or use the platform as a pivot point for further attacks.
Likely Case
Attackers will typically use this to steal user session cookies, redirect users to phishing sites, or perform limited actions within the victim's Adobe Connect session.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented entirely. Web Application Firewalls (WAFs) with XSS protection could block most exploitation attempts.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly weaponized due to their simplicity. Attackers only need to craft malicious URLs and convince victims to click them.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Adobe Connect 12.7 and 11.4.8
Vendor Advisory: https://helpx.adobe.com/security/products/connect/apsb24-99.html
Restart Required: Yes
Instructions:
1. Download the latest Adobe Connect version from Adobe's official website. 2. Backup your current installation and configuration. 3. Install the update following Adobe's deployment guide. 4. Restart the Adobe Connect services. 5. Verify the update was successful.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to detect and block XSS payloads in URLs and parameters
Content Security Policy (CSP)
allImplement strict CSP headers to limit script execution sources
🧯 If You Can't Patch
- Implement strict input validation on all user-supplied parameters
- Deploy a Web Application Firewall (WAF) with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check Adobe Connect version in administration console or by examining installation files. Versions 12.6 or earlier, or 11.4.7 or earlier are vulnerable.Check Version:
Check Adobe Connect administration panel or examine the version.txt file in the installation directoryVerify Fix Applied:
Verify Adobe Connect version is 12.7 or later, or 11.4.8 or later. Test vulnerable endpoints with safe XSS payloads to confirm they're properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters containing JavaScript payloads
- Multiple failed requests with suspicious parameters
- Requests to known vulnerable endpoints with encoded payloads
Network Indicators:
- HTTP requests containing <script> tags or JavaScript in URL parameters
- Requests to Adobe Connect pages with unusually long or encoded parameters
SIEM Query:
source="adobe_connect" AND (url="*<script>*" OR url="*javascript:*" OR parameter="*<script>*" OR parameter="*javascript:*")