CVE-2020-9682 in Creative Cloud Desktop Application
Summary
by MITRE
Adobe Creative Cloud Desktop Application versions 5.1 and earlier have a symlink vulnerability vulnerability. Successful exploitation could lead to arbitrary file system write.
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Analysis
by VulDB Data Team • 10/23/2024
The CVE-2020-9682 vulnerability represents a critical symlink weakness in Adobe Creative Cloud Desktop Application versions 5.1 and earlier, exposing systems to potential arbitrary file system write operations. This flaw resides within the application's handling of symbolic links during installation or update processes, creating a path traversal condition that adversaries can exploit to manipulate the file system. The vulnerability specifically affects the desktop application component that manages the installation and configuration of Adobe Creative Cloud products, making it a significant concern for enterprise environments where Adobe applications are widely deployed.
The technical implementation of this vulnerability stems from insufficient validation of symbolic link targets during the application's installation routine. When the Creative Cloud Desktop Application processes installation packages or update files, it fails to properly verify the integrity and destination of symbolic links, allowing attackers to craft malicious symlink structures that point to critical system files or directories. This weakness aligns with CWE-646 principle of least privilege violation and represents a classic path traversal vulnerability that enables attackers to bypass normal access controls. The flaw operates at the file system level, where the application's failure to sanitize symlink targets creates an opportunity for privilege escalation and persistent system compromise.
The operational impact of this vulnerability extends beyond simple file system manipulation, as successful exploitation can enable attackers to modify critical system files, install malicious software, or establish persistence mechanisms within the target environment. Attackers can leverage this weakness to overwrite configuration files, modify application binaries, or inject malicious code into the Creative Cloud installation process, potentially affecting multiple Adobe products that rely on the desktop application for updates and management. The vulnerability's exploitation requires minimal privileges and can be executed through carefully crafted installation packages or update mechanisms, making it particularly dangerous in enterprise settings where Adobe Creative Cloud is deployed across numerous endpoints.
Organizations should immediately implement mitigations including updating to Adobe Creative Cloud Desktop Application version 5.2 or later, which addresses this vulnerability through improved symlink validation and enhanced file system access controls. System administrators should also consider implementing restrictive file system permissions on Adobe installation directories and monitoring for suspicious symlink creation activities. The vulnerability demonstrates the importance of proper input validation and secure coding practices, particularly when handling file system operations and symbolic link resolution. Organizations should also review their deployment policies to ensure that Adobe Creative Cloud installations are properly secured and that automatic updates are configured to maintain current security patches. This vulnerability underscores the necessity of regular security assessments and the implementation of defense-in-depth strategies to protect against similar weaknesses in third-party applications that handle system-level operations.