CVE-2019-8240
📋 TL;DR
CVE-2019-8240 is a memory corruption vulnerability in Adobe Bridge CC that could allow attackers to read sensitive information from application memory. This affects users running Adobe Bridge CC versions 9.1 and earlier on any operating system where the software is installed.
💻 Affected Systems
- Adobe Bridge CC
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could exploit this vulnerability to read sensitive information from the application's memory, potentially exposing passwords, encryption keys, or other confidential data stored in RAM during Bridge's operation.
Likely Case
Most probable exploitation would result in limited information disclosure from Bridge's memory space, potentially exposing file metadata, recently accessed paths, or temporary processing data rather than system-wide sensitive information.
If Mitigated
With proper controls like application sandboxing, memory protection features enabled, and limited user privileges, the impact would be contained to the Bridge process memory space with minimal risk to the broader system.
🎯 Exploit Status
Exploitation requires user interaction (opening a malicious file) and knowledge of memory layout. No public exploit code has been documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Bridge CC 9.1.1 or later
Vendor Advisory: https://helpx.adobe.com/security/products/bridge/apsb19-53.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to the 'Apps' section. 3. Find Adobe Bridge CC 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 Bridge file handling
windowsPrevent Bridge from automatically opening or processing potentially malicious files by adjusting file association settings.
Right-click on file types typically opened by Bridge -> Open With -> Choose another app -> Uncheck 'Always use this app'
Run with reduced privileges
windowsExecute Adobe Bridge with limited user permissions to reduce potential impact of information disclosure.
runas /user:standarduser "C:\Program Files\Adobe\Adobe Bridge CC\Bridge.exe"
🧯 If You Can't Patch
- Restrict Bridge usage to trusted files only and avoid opening files from untrusted sources
- Implement application whitelisting to prevent execution of unauthorized processes alongside Bridge
🔍 How to Verify
Check if Vulnerable:
Open Adobe Bridge CC, go to Help > About Adobe Bridge CC and check if version is 9.1 or earlier.Check Version:
On Windows: wmic product where "name like 'Adobe Bridge%'" get version
On macOS: /Applications/Adobe Bridge CC/Adobe Bridge CC.app/Contents/Info.plist | grep -A1 CFBundleShortVersionStringVerify Fix Applied:
After updating, verify the version shows 9.1.1 or later in Help > About Adobe Bridge CC.📡 Detection & Monitoring
Log Indicators:
- Application crashes of Adobe Bridge CC
- Unexpected memory access errors in system logs
- Multiple failed file opening attempts
Network Indicators:
- Unusual outbound connections after Bridge processes files
- Data exfiltration patterns following Bridge usage
SIEM Query:
source="*security*" AND ("Adobe Bridge" OR "Bridge.exe") AND ("crash" OR "access violation" OR "memory error")