CVE-2020-9561
📋 TL;DR
Adobe Bridge versions 10.0.1 and earlier contain an out-of-bounds write vulnerability that could allow attackers to execute arbitrary code on affected systems. This affects users running vulnerable versions of Adobe Bridge on any supported operating system. Successful exploitation requires user interaction, such as opening a malicious file.
💻 Affected Systems
- Adobe Bridge
📦 What is this software?
Bridge by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the affected machine, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or arbitrary code execution in the context of the current user, allowing attackers to install malware, steal sensitive files, or establish persistence.
If Mitigated
Limited impact due to proper patching, application whitelisting, or restricted user privileges preventing successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction (opening a malicious file). No public proof-of-concept was available at the time of the advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.0.2 or later
Vendor Advisory: https://helpx.adobe.com/security/products/bridge/apsb20-19.html
Restart Required: Yes
Instructions:
1. Open Adobe Bridge. 2. Go to Help > Check for Updates. 3. Follow prompts to install version 10.0.2 or later. 4. Restart the application after installation.
🔧 Temporary Workarounds
Restrict file types
allConfigure system or application to block opening of suspicious file types that could trigger the vulnerability
User awareness training
allEducate users not to open files from untrusted sources
🧯 If You Can't Patch
- Remove Adobe Bridge from affected systems if not essential for business operations
- Implement application whitelisting to prevent execution of unauthorized binaries
🔍 How to Verify
Check if Vulnerable:
Check Adobe Bridge version in Help > About Adobe Bridge. If version is 10.0.1 or earlier, the system is vulnerable.Check Version:
On Windows: Check registry at HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Bridge\10.0\Version. On macOS: Check /Applications/Adobe Bridge/Contents/Info.plist for CFBundleShortVersionStringVerify Fix Applied:
Verify Adobe Bridge version is 10.0.2 or later in Help > About Adobe Bridge.📡 Detection & Monitoring
Log Indicators:
- Application crashes of Adobe Bridge
- Unusual process creation from Adobe Bridge executable
- File access to suspicious file types by Adobe Bridge
Network Indicators:
- Outbound connections from Adobe Bridge to unknown IP addresses
- DNS requests for suspicious domains from Adobe Bridge process
SIEM Query:
Process creation where parent_process_name contains 'Bridge.exe' AND (process_name contains 'cmd.exe' OR process_name contains 'powershell.exe' OR process_name contains 'wscript.exe')