CVE-2012-3702 in iTunes
Summary
by MITRE
WebKit, as used in Apple iTunes before 10.7, 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-2012-09-12-1.
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Analysis
by VulDB Data Team • 12/30/2024
The vulnerability identified as CVE-2012-3702 represents a critical memory corruption flaw within WebKit engine components that were integrated into Apple iTunes version 10.6 and earlier. This vulnerability specifically affects the web rendering capabilities of iTunes when processing maliciously crafted web content, creating a pathway for remote code execution attacks that could compromise the entire system. The flaw operates through a sophisticated memory corruption mechanism that allows attackers to manipulate the application's memory structures, potentially leading to arbitrary code execution or system instability resulting in denial of service conditions.
The technical implementation of this vulnerability stems from improper input validation and memory management within the WebKit rendering engine's handling of specific web content structures. When iTunes processes web pages containing maliciously constructed elements, particularly those involving memory allocation patterns or object manipulation, the engine fails to properly validate memory boundaries and object references. This weakness creates exploitable conditions where attacker-controlled data can overwrite critical memory locations, leading to unpredictable behavior including application crashes or complete system compromise. The vulnerability demonstrates characteristics consistent with heap-based buffer overflow conditions that are commonly classified under CWE-122 and CWE-787, which specifically address improper restriction of operations within a memory buffer and insufficient checking of the length of a buffer.
From an operational perspective, this vulnerability presents significant risk to users who may inadvertently visit compromised websites while iTunes is running, as the attack vector requires no user interaction beyond normal browsing activities. The impact extends beyond simple denial of service scenarios, as successful exploitation could allow attackers to execute malicious code with the privileges of the iTunes process, potentially leading to complete system compromise. The vulnerability's classification as a remote attack means that exploitation can occur without physical access to the target system, making it particularly dangerous in enterprise environments where iTunes might be used to access web content from untrusted sources. This aligns with ATT&CK technique T1203 which describes exploitation of web browsers and web applications for privilege escalation and system compromise.
The remediation approach for this vulnerability required Apple to implement comprehensive memory safety improvements within the WebKit engine, including enhanced input validation, stricter memory boundary checking, and improved object lifecycle management. Users were advised to upgrade to iTunes version 10.7 or later, which contained patches addressing the specific memory corruption patterns that enabled this exploit. Organizations should prioritize this update as part of their patch management protocols, particularly in environments where iTunes might be used to access untrusted web content. The vulnerability also highlights the importance of regular security updates for integrated software components, as WebKit's widespread use across multiple Apple applications means that a single vulnerability can impact multiple products simultaneously, making coordinated patching essential for comprehensive protection.