CVE-2003-1008 in Mac OS X
Summary
by MITRE
Unknown vulnerability in Mac OS X 10.2.8 and 10.3.2 allows local users to bypass the screen saver login window and write a text clipping to the desktop or another application.
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Analysis
by VulDB Data Team • 06/29/2021
This vulnerability exists within the Mac OS X operating system version 10.2.8 and 10.3.2, representing a security flaw that allows local users to circumvent the screen saver authentication mechanism. The issue stems from insufficient access controls and privilege validation within the system's graphical user interface components, specifically affecting the screen saver login window functionality. Attackers can exploit this weakness to gain unauthorized access to the desktop environment without proper authentication, potentially leading to further system compromise through the manipulation of text clipping data.
The technical implementation of this vulnerability involves a flaw in how the system validates user credentials and manages application access permissions during screen saver transitions. When a user locks their screen saver, the system should enforce strict authentication protocols before granting access to desktop functions or application interfaces. However, this vulnerability allows malicious users to bypass these security checks and directly interact with the desktop environment, including the ability to write text clipping data to arbitrary locations on the desktop or into other applications. The flaw essentially creates a pathway for privilege escalation and unauthorized data manipulation within the operating system's user interface framework.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential data integrity and confidentiality risks. Local users who exploit this vulnerability can not only bypass authentication but also manipulate text clipping content, which may contain sensitive information or serve as a vector for additional attacks. This capability allows attackers to inject malicious content into the desktop environment, potentially leading to social engineering attacks or data exfiltration. The vulnerability affects the fundamental security model of the operating system's screen saver protection mechanism, undermining the trust model that users rely upon when their systems are locked.
Mitigation strategies for this vulnerability should focus on implementing proper access control mechanisms and strengthening the authentication validation processes within the screen saver subsystem. System administrators should ensure that all Mac OS X systems are updated to patched versions that address this specific vulnerability, as the issue represents a known flaw in the operating system's privilege management. Additionally, organizations should implement monitoring solutions to detect unauthorized access attempts and maintain strict access controls for local user accounts. The vulnerability aligns with common weakness enumerations such as CWE-284 for improper access control and CWE-79 for cross-site scripting, while potentially supporting techniques from the ATT&CK framework under privilege escalation and persistence tactics. Organizations should also consider implementing additional security controls such as mandatory access controls and enhanced audit logging to detect and prevent exploitation attempts.