CVE-2020-9669

9.8 CRITICAL

📋 TL;DR

This vulnerability in Adobe Creative Cloud Desktop Application allows attackers to escalate privileges on affected systems due to insufficient exploit mitigations. Users running versions 5.1 and earlier are vulnerable to local privilege escalation attacks.

💻 Affected Systems

Products:
  • Adobe Creative Cloud Desktop Application
Versions: 5.1 and earlier
Operating Systems: Windows, macOS
Default Config Vulnerable: ⚠️ Yes
Notes: All default installations of affected versions are vulnerable. The application must be installed and running.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Full system compromise with administrative privileges, allowing installation of persistent malware, data theft, and complete control of the affected system.

🟠

Likely Case

Local privilege escalation enabling attackers to execute arbitrary code with elevated permissions, potentially leading to lateral movement within networks.

🟢

If Mitigated

Limited impact with proper user account controls and network segmentation, though local privilege escalation remains possible.

🌐 Internet-Facing: LOW - This is primarily a local privilege escalation vulnerability requiring local access to the system.
🏢 Internal Only: HIGH - Attackers with initial access to a user account can escalate privileges to compromise the entire system.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploitation requires local access to the system. The CWE-269 (Improper Privilege Management) suggests relatively straightforward exploitation once initial access is obtained.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 5.2 or later

Vendor Advisory: https://helpx.adobe.com/security/products/creative-cloud/apsb20-33.html

Restart Required: Yes

Instructions:

1. Open Adobe Creative Cloud Desktop Application. 2. Click on the gear icon (Preferences). 3. Select 'Apps' tab. 4. Click 'Check for Updates'. 5. Install any available updates. 6. Restart the application and system if prompted.

🔧 Temporary Workarounds

Uninstall Creative Cloud Desktop Application

windows

Remove the vulnerable application entirely to eliminate the attack surface

Control Panel > Programs > Uninstall a program > Adobe Creative Cloud > Uninstall

Restrict User Privileges

all

Run Creative Cloud with standard user privileges instead of administrative rights

🧯 If You Can't Patch

  • Implement strict network segmentation to limit lateral movement
  • Apply principle of least privilege to all user accounts

🔍 How to Verify

Check if Vulnerable:

Check Creative Cloud version in application preferences or via 'Creative Cloud.exe --version' command

Check Version:

Creative Cloud.exe --version

Verify Fix Applied:

Verify version is 5.2 or higher in application preferences

📡 Detection & Monitoring

Log Indicators:

  • Unusual privilege escalation events in Windows Event Logs (Event ID 4672, 4688)
  • Creative Cloud process spawning with elevated privileges

Network Indicators:

  • Unusual outbound connections from Creative Cloud processes

SIEM Query:

EventID=4688 AND ProcessName="Creative Cloud.exe" AND NewProcessName="cmd.exe" OR "powershell.exe"

🔗 References

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