CVE-2020-9669: Adobe Creative Cloud Privilege Escalation

CVE-2020-9669 Overview

CVE-2020-9669 is a privilege escalation vulnerability affecting Adobe Creative Cloud Desktop Application versions 5.1 and earlier. The vulnerability stems from a lack of exploit mitigations, which allows attackers to escalate privileges on affected systems. This security flaw exists in the Windows version of the Creative Cloud Desktop Application and can be exploited to gain elevated system access.

Critical Impact

Successful exploitation of this vulnerability could allow an attacker to escalate privileges on a Windows system running vulnerable versions of Adobe Creative Cloud Desktop Application, potentially leading to complete system compromise.

Affected Products

• Adobe Creative Cloud Desktop Application versions 5.1 and earlier
• Microsoft Windows operating systems running vulnerable Creative Cloud versions

Discovery Timeline

• 2020-07-17 - CVE-2020-9669 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2020-9669

Vulnerability Analysis

This vulnerability is classified under CWE-269 (Improper Privilege Management), indicating that the Adobe Creative Cloud Desktop Application fails to properly enforce privilege restrictions. The lack of exploit mitigations in versions 5.1 and earlier creates a pathway for attackers to bypass security controls and escalate their privileges on the system.

The vulnerability can be exploited remotely without requiring user interaction or prior authentication, making it particularly dangerous in enterprise environments where Creative Cloud is widely deployed. Once exploited, an attacker could gain elevated privileges that allow them to execute arbitrary code, access sensitive data, or establish persistent access to the compromised system.

Root Cause

The root cause of CVE-2020-9669 lies in the absence of proper exploit mitigations within the Adobe Creative Cloud Desktop Application. Modern software typically implements various security mechanisms such as Address Space Layout Randomization (ASLR), Data Execution Prevention (DEP), and stack canaries to make exploitation more difficult. The lack of these protections in the affected versions creates opportunities for attackers to exploit other vulnerabilities or weaknesses to achieve privilege escalation.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no privileges or user interaction to exploit. An attacker could leverage this vulnerability in conjunction with other attack techniques to gain elevated access on systems running vulnerable versions of the Creative Cloud Desktop Application.

The exploitation flow typically involves:

1. Identifying a target system running Adobe Creative Cloud Desktop Application version 5.1 or earlier
2. Leveraging the missing exploit mitigations to bypass security controls
3. Escalating privileges to gain higher-level system access
4. Using elevated privileges for further malicious activities

For detailed technical information about the vulnerability mechanism, refer to the Adobe Security Advisory APSB20-33.

Detection Methods for CVE-2020-9669

Indicators of Compromise

• Unexpected privilege escalation events associated with Adobe Creative Cloud processes
• Anomalous behavior from Creative Cloud.exe or related Adobe processes
• Unusual system calls or API requests originating from Creative Cloud components
• Evidence of security control bypass attempts in Windows event logs

Detection Strategies

• Monitor for unusual process behavior from Adobe Creative Cloud Desktop Application components
• Implement endpoint detection rules to identify privilege escalation attempts
• Deploy application whitelisting to detect unauthorized modifications to Creative Cloud binaries
• Use behavioral analysis to detect anomalous activity patterns associated with Creative Cloud processes

Monitoring Recommendations

• Enable detailed Windows Security Event logging, particularly for privilege escalation events (Event IDs 4672, 4673, 4674)
• Monitor Adobe Creative Cloud update status across the enterprise to ensure all installations are patched
• Implement file integrity monitoring on Creative Cloud installation directories
• Configure SIEM alerts for suspicious activity involving Adobe processes

How to Mitigate CVE-2020-9669

Immediate Actions Required

• Update Adobe Creative Cloud Desktop Application to the latest version immediately
• Audit all systems to identify installations running version 5.1 or earlier
• Apply the security update provided in Adobe Security Advisory APSB20-33
• Implement network segmentation to limit exposure of vulnerable systems until patching is complete

Patch Information

Adobe has released a security update addressing this vulnerability as documented in Adobe Security Advisory APSB20-33. Organizations should update to the latest version of Adobe Creative Cloud Desktop Application to remediate this vulnerability. The update can be obtained through the Adobe Creative Cloud application's built-in update mechanism or through Adobe Admin Console for enterprise deployments.

Workarounds

• Restrict network access to systems running vulnerable versions until patches can be applied
• Implement application control policies to limit Creative Cloud execution to authorized users only
• Monitor vulnerable systems with enhanced endpoint detection capabilities
• Consider temporarily disabling or removing Creative Cloud from high-risk systems until patching is feasible

# Check Adobe Creative Cloud version on Windows
# Navigate to Control Panel > Programs and Features
# Or use PowerShell to query installed software
Get-WmiObject -Class Win32_Product | Where-Object { $_.Name -like "*Adobe Creative Cloud*" } | Select-Object Name, Version