CVE-2011-2816 in iTunes
Summary
by MITRE
WebKit, as used in Apple iTunes before 10.5, allows man-in-the-middle attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via vectors related to iTunes Store browsing, a different vulnerability than other CVEs listed in APPLE-SA-2011-10-11-1.
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Analysis
by VulDB Data Team • 01/19/2025
The vulnerability identified as CVE-2011-2816 represents a critical security flaw in Apple iTunes versions prior to 10.5, specifically within the WebKit rendering engine component that handles iTunes Store browsing functionality. This vulnerability exposes a significant weakness in the application's handling of web content and network communications, creating potential attack vectors that could be exploited by malicious actors positioned between users and the iTunes Store servers. The flaw manifests during the processing of web-based content within the iTunes environment, particularly when users navigate through the iTunes Store interface, making it a prime target for man-in-the-middle attacks that leverage network position rather than direct system compromise.
The technical implementation of this vulnerability stems from improper memory handling and validation within WebKit's processing of iTunes Store content, leading to potential memory corruption issues that can result in arbitrary code execution or application crashes. This type of vulnerability typically occurs when input validation is insufficient or when the application fails to properly sanitize data received from external sources, particularly in web-based contexts where content can be dynamically generated and delivered. The flaw operates at a fundamental level of memory management, where the application's failure to properly handle memory allocation and deallocation during web content processing creates opportunities for attackers to manipulate memory structures and execute malicious code with the privileges of the iTunes application.
The operational impact of CVE-2011-2816 extends beyond simple denial of service conditions to encompass potential full system compromise through arbitrary code execution capabilities. Attackers exploiting this vulnerability could gain unauthorized access to user systems, potentially leading to data theft, system control, or further network infiltration. The vulnerability's classification as a memory corruption issue aligns with common attack patterns documented in the attack framework, where memory-based vulnerabilities represent a significant threat vector due to their potential for privilege escalation and system compromise. The specific context of iTunes Store browsing makes this vulnerability particularly dangerous as it affects users who are already engaged in legitimate transactions and browsing activities, increasing the attack surface and potential impact.
Security professionals should note that this vulnerability demonstrates the importance of proper input validation and memory management in web-based applications, particularly those that integrate network communication with user-facing interfaces. The flaw's relationship to other vulnerabilities in the same advisory (APPLE-SA-2011-10-11-1) indicates a broader pattern of security weaknesses within the iTunes application's web handling capabilities. Organizations and users should implement immediate mitigation strategies including updating to iTunes version 10.5 or later, which contains the necessary patches to address the memory corruption issues. Additionally, network monitoring and traffic inspection should be enhanced to detect potential exploitation attempts, particularly when users are accessing iTunes Store content or when network communications involve the iTunes application's web browsing functionality. The vulnerability serves as a reminder of the critical importance of keeping software components updated, especially those that handle network communications and web content processing, as these areas represent common attack surfaces for sophisticated adversaries.