CVE-2012-0681 in Apple Remote Desktop
Summary
by MITRE
Apple Remote Desktop before 3.6.1 does not recognize the "Encrypt all network data" setting during connections to third-party VNC servers, which allows remote attackers to obtain cleartext VNC session content by sniffing the network.
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Analysis
by VulDB Data Team • 01/03/2025
Apple Remote Desktop version 3.6.1 and earlier contains a critical security flaw that undermines the integrity of network communications during VNC sessions. This vulnerability stems from the application's failure to properly enforce encryption settings when establishing connections to third-party VNC servers, creating a significant gap in the security architecture that directly violates industry standards for secure remote access protocols. The flaw represents a direct violation of the principle of least privilege and secure communication practices that are fundamental to enterprise security frameworks.
The technical implementation of this vulnerability occurs at the network protocol layer where Apple Remote Desktop fails to validate or enforce the encryption parameter that should be negotiated during the VNC connection handshake process. When users configure the "Encrypt all network data" setting in Apple Remote Desktop, this configuration is ignored when connecting to non-Apple VNC servers, leaving all VNC session data transmitted in cleartext across the network. This represents a classic case of improper input validation and security configuration management, aligning with CWE-310 vulnerability classification for cryptographic issues and improper enforcement of security policies.
The operational impact of this vulnerability is severe and far-reaching for organizations relying on Apple Remote Desktop for remote system administration. Attackers with network access can easily intercept VNC session data through passive network sniffing techniques, gaining access to sensitive information including user credentials, system commands, and potentially confidential data exchanged during remote sessions. This vulnerability creates an attack surface that directly enables credential theft, session hijacking, and unauthorized system access, making it particularly dangerous in enterprise environments where sensitive data and critical infrastructure are managed through remote access tools. The attack vector is straightforward and requires minimal technical expertise, making it attractive to both opportunistic attackers and more sophisticated threat actors.
Organizations affected by this vulnerability should immediately update to Apple Remote Desktop version 3.6.1 or later, which properly enforces encryption settings for all VNC connections. Security teams should implement network segmentation and monitoring to detect potential interception attempts, while also reviewing and strengthening their overall remote access security policies. The mitigation strategy should include mandatory encryption enforcement, regular security audits of remote access configurations, and implementation of additional security controls such as multi-factor authentication and network access controls. This vulnerability demonstrates the critical importance of proper cryptographic implementation and configuration management in enterprise security, highlighting the need for comprehensive security testing of all network communication components and adherence to established security frameworks that address the specific threats outlined in the ATT&CK framework under remote services and credential access categories.