CVE-2012-3682 in iOS
Summary
by MITRE
WebKit, as used in Apple Safari before 6.0, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2012-07-25-1.
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Analysis
by VulDB Data Team • 01/04/2025
The vulnerability identified as CVE-2012-3682 represents a critical memory corruption flaw within WebKit engine components that power Apple Safari browser versions prior to 6.0. This vulnerability resides in the core rendering and scripting engine that processes web content, making it a fundamental component of the browser's security architecture. The flaw specifically manifests when WebKit encounters maliciously crafted web content that triggers improper memory handling during content rendering or script execution phases. Security researchers have classified this issue as a remote code execution vulnerability due to its potential for arbitrary code execution on affected systems.
The technical nature of this vulnerability stems from improper memory management within WebKit's JavaScript engine and HTML rendering components. When processing specially crafted web pages, the engine fails to properly validate memory boundaries during object allocation and deallocation processes, leading to memory corruption that can be exploited by remote attackers. This type of vulnerability typically falls under CWE-125, which describes out-of-bounds read conditions, or CWE-787, which covers out-of-bounds write conditions. The memory corruption occurs during the parsing and execution of web content, particularly when handling complex JavaScript objects or DOM manipulations that exceed expected memory boundaries.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it enables attackers to execute arbitrary code on vulnerable systems with the privileges of the browser process. This creates a significant threat vector for man-in-the-middle attacks, drive-by downloads, and social engineering campaigns where malicious websites can automatically compromise user systems without requiring any user interaction beyond visiting the compromised site. The vulnerability affects not only end-user systems but also enterprise environments where Safari is the default browser, potentially allowing attackers to establish persistent access points or escalate privileges within network environments. According to ATT&CK framework, this vulnerability maps to T1059.007 for script execution and T1068 for local privilege escalation, making it a critical vector for initial access and lateral movement.
Mitigation strategies for CVE-2012-3682 primarily involve immediate patching of affected Safari versions to 6.0 or later, which includes memory safety improvements and enhanced input validation mechanisms. System administrators should implement network-based protections such as web application firewalls and content filtering solutions that can detect and block malicious web content patterns. Browser hardening measures including disabling JavaScript for untrusted sites, implementing sandboxing technologies, and regular security updates form essential defensive layers. Additionally, user education regarding safe browsing practices and awareness of suspicious websites remains crucial in preventing exploitation. Organizations should conduct regular vulnerability assessments to identify systems running outdated Safari versions and ensure comprehensive patch management processes are in place to prevent similar vulnerabilities from persisting in their environments.