CVE-2012-3694 in Safari
Summary
by MITRE
WebKit in Apple Safari before 6.0 does not properly handle drag-and-drop events, which allows user-assisted remote attackers to obtain sensitive information about full pathnames via a crafted web site.
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Analysis
by VulDB Data Team • 01/04/2025
The vulnerability identified as CVE-2012-3694 resides within the WebKit rendering engine component of Apple Safari browser versions prior to 6.0. This flaw represents a significant security weakness that exploits the browser's improper handling of drag-and-drop events, creating an avenue for remote attackers to extract sensitive path information from targeted systems. The issue stems from insufficient validation and sanitization of user-controlled input within the browser's event processing mechanisms, specifically affecting how Safari manages drag-and-drop operations initiated through web content.
The technical implementation of this vulnerability allows attackers to craft malicious web pages that manipulate drag-and-drop functionality to reveal absolute file paths on the victim's system. When users interact with these specially designed web pages, the browser's WebKit engine fails to properly isolate the drag-and-drop event handlers from the underlying file system information, resulting in unintended exposure of directory structures and file locations. This occurs because the browser's event handling code does not adequately sanitize the data passed between the web content and the operating system's file access interfaces during drag-and-drop operations, creating a path disclosure scenario.
The operational impact of CVE-2012-3694 extends beyond simple information disclosure, as the exposed path information can serve as a foundation for more sophisticated attacks. Attackers can leverage the discovered absolute paths to conduct further reconnaissance, identify system configurations, and potentially exploit additional vulnerabilities that may exist in the exposed file system structures. This vulnerability aligns with CWE-200, which categorizes information exposure issues, and represents a clear violation of the principle of least privilege in web browser security architecture. The flaw enables attackers to bypass normal access controls that would typically prevent such path enumeration, effectively weakening the browser's security boundary.
This vulnerability demonstrates a critical gap in the browser's security model and represents a classic example of improper input validation within web application contexts. The attack vector requires user interaction with a malicious website, making it a user-assisted remote attack that aligns with ATT&CK technique T1068, which covers local privilege escalation and information gathering. Organizations using affected Safari versions face increased risk of targeted attacks where attackers can use the path information to craft more effective exploitation strategies against the underlying operating system. The vulnerability also highlights the importance of proper event handling in web rendering engines and the necessity of maintaining strict isolation between web content and system-level operations.
Mitigation strategies for CVE-2012-3694 primarily involve updating to Safari 6.0 or later versions where the WebKit rendering engine properly handles drag-and-drop events without exposing sensitive path information. System administrators should implement comprehensive browser update policies and ensure that all users maintain current versions of their web browsers. Additionally, organizations should consider implementing network-level protections such as web application firewalls and content filtering solutions to detect and block malicious web content that might exploit this vulnerability. The fix implemented in Safari 6.0 demonstrates proper input validation and event handling practices that prevent the leakage of system information through web browser interfaces, reinforcing the importance of regular security updates in maintaining robust cybersecurity postures.