CVE-2022-30656
📋 TL;DR
CVE-2022-30656 is an out-of-bounds write vulnerability in Adobe InCopy that allows arbitrary code execution when a user opens a malicious file. This affects users of Adobe InCopy versions 17.2 and earlier, and 16.4.1 and earlier. Successful exploitation requires user interaction to open a crafted file.
💻 Affected Systems
- Adobe InCopy
📦 What is this software?
Incopy by Adobe
Incopy 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.
Likely Case
Malware installation, data theft, or ransomware deployment after a user opens a malicious document.
If Mitigated
No impact if users don't open untrusted files or if the application is patched.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and knowledge of memory corruption techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 17.3 and 16.4.2
Vendor Advisory: https://helpx.adobe.com/security/products/incopy/apsb22-29.html
Restart Required: Yes
Instructions:
1. Open Adobe InCopy. 2. Go to Help > Check for Updates. 3. Follow prompts to install version 17.3 or 16.4.2. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file opening
allConfigure application to only open trusted files or disable automatic opening of certain file types.
Application sandboxing
allRun Adobe InCopy in a sandboxed environment to limit potential damage from exploitation.
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized code
- Educate users about the risks of opening untrusted documents and implement email filtering for malicious attachments
🔍 How to Verify
Check if Vulnerable:
Check Adobe InCopy version via Help > About InCopy. If version is 17.2 or earlier, or 16.4.1 or earlier, the system is vulnerable.Check Version:
On Windows: Check registry at HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\InCopy\XX.0\Registration (where XX is version). On macOS: Check /Applications/Adobe InCopy XX/Adobe InCopy XX.app/Contents/Info.plistVerify Fix Applied:
Verify version is 17.3 or higher, or 16.4.2 or higher after patching.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected child processes spawned from InCopy
Network Indicators:
- Unexpected outbound connections after opening InCopy documents
SIEM Query:
EventID=1000 OR EventID=1001 with Application Name containing 'InCopy' OR Process creation from InCopy.exe with suspicious command lines