CVE-2024-20756
📋 TL;DR
CVE-2024-20756 is an out-of-bounds write vulnerability in Adobe Bridge that could allow arbitrary code execution when a user opens a malicious file. This affects users of Adobe Bridge versions 13.0.5, 14.0.1 and earlier. Successful exploitation requires user interaction through opening a malicious file.
💻 Affected Systems
- Adobe Bridge
📦 What is this software?
Bridge by Adobe
Bridge by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the victim's computer in the context of the current user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Malware installation or data exfiltration after a user opens a malicious file, with the attacker operating with the same privileges as the current user.
If Mitigated
No impact if users avoid opening untrusted files or if the application is patched.
🎯 Exploit Status
Exploitation requires user interaction (opening a malicious file). The vulnerability is in file parsing functionality.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Bridge 14.0.2 and later
Vendor Advisory: https://helpx.adobe.com/security/products/bridge/apsb24-15.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to the 'Apps' section. 3. Find Adobe Bridge and click 'Update' if available. 4. Alternatively, download the latest version from Adobe's website. 5. Install the update and restart your computer.
🔧 Temporary Workarounds
Disable automatic file opening
allConfigure Adobe Bridge to not automatically open files or disable certain file type associations
User awareness training
allTrain users to avoid opening untrusted files from unknown sources
🧯 If You Can't Patch
- Restrict user permissions to limit potential damage from code execution
- Implement application whitelisting to prevent execution of unauthorized code
🔍 How to Verify
Check if Vulnerable:
Check Adobe Bridge version in Help > About Adobe Bridge. If version is 13.0.5, 14.0.1 or earlier, the system is vulnerable.Check Version:
On Windows: Check via Adobe Bridge Help menu > About Adobe Bridge. On macOS: Adobe Bridge > About Adobe Bridge.Verify Fix Applied:
Verify Adobe Bridge version is 14.0.2 or later after applying the update.📡 Detection & Monitoring
Log Indicators:
- Unexpected Adobe Bridge crashes
- Suspicious file opening events in application logs
- Unusual process creation from Adobe Bridge
Network Indicators:
- Unexpected outbound connections from Adobe Bridge process
- DNS requests to suspicious domains after file opening
SIEM Query:
Process creation where parent process contains 'bridge' AND (command line contains suspicious file extensions OR destination IP is known malicious)