CVE-2011-2356 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-2011-2356 represents a critical security flaw in Apple iTunes software versions prior to 10.5, specifically within the WebKit rendering engine component that handles iTunes Store browsing functionality. This vulnerability exposes users to significant risks during online transactions and content access within the iTunes ecosystem. The flaw manifests when users navigate through the iTunes Store interface, creating potential attack vectors that could be exploited by malicious actors positioned between the user and the iTunes Store servers. The vulnerability's classification as a man-in-the-middle attack vector indicates that attackers can intercept and manipulate network communications without requiring direct user interaction or system compromise.
The technical implementation of this vulnerability stems from memory corruption issues within WebKit's handling of iTunes Store browsing operations. When users access the iTunes Store through affected versions of iTunes, the WebKit engine processes web content and interactive elements that trigger memory management errors. These memory corruption flaws can result in unpredictable behavior including application crashes, system instability, and potentially arbitrary code execution on the target system. The vulnerability specifically affects how WebKit manages memory allocation and deallocation during web content rendering, particularly in scenarios involving dynamic content loading and interactive store browsing features. The flaw operates at the intersection of network protocol handling and memory management within the browser engine, creating conditions where malformed or malicious content can trigger buffer overflows or other memory corruption patterns.
The operational impact of CVE-2011-2356 extends beyond simple application instability to encompass potential full system compromise and unauthorized access to user data. Attackers exploiting this vulnerability could gain unauthorized code execution privileges on affected systems, potentially enabling them to install malware, access sensitive user information, or redirect users to malicious websites. The denial of service aspect of this vulnerability creates additional operational risks by causing iTunes applications to crash repeatedly, disrupting legitimate user activities and potentially creating conditions for more sophisticated attacks. Users engaging in digital commerce through iTunes Store are particularly at risk since the vulnerability occurs during normal transaction processes, making it difficult for users to detect or prevent exploitation attempts. The vulnerability's presence in Apple iTunes before version 10.5 represents a significant security gap that could have been exploited for financial fraud or data theft during online purchases.
Mitigation strategies for CVE-2011-2356 focus primarily on immediate software updates and system hardening measures. Users should immediately upgrade to iTunes version 10.5 or later, which contains patches addressing the WebKit memory corruption issues. Network administrators should implement additional security monitoring to detect unusual traffic patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write vulnerabilities, both of which are common in memory management errors within browser engines. Organizations should also consider implementing network segmentation and traffic monitoring solutions to detect potential man-in-the-middle attacks targeting iTunes Store browsing. The ATT&CK framework categorizes this vulnerability under T1059 for command and control communications and T1071 for application layer protocols, as attackers could leverage the compromised iTunes application to establish persistent access or exfiltrate data through legitimate network connections. Regular security audits and patch management processes should include verification of iTunes software versions to ensure protection against this and similar vulnerabilities in the WebKit rendering engine.