CVE-2011-3239 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-2011-3239 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 issue constitutes a man-in-the-middle attack vector that could potentially allow remote attackers to execute arbitrary code on affected systems or cause denial of service conditions through memory corruption. The vulnerability specifically affects the way iTunes processes web content during iTunes Store interactions, creating an exploitable condition that differs from other vulnerabilities documented in APPLE-SA-2011-10-11-1, indicating a distinct attack surface within the application's web handling capabilities. The flaw demonstrates the inherent risks associated with integrating web-based components into desktop applications, particularly when these components process untrusted content from remote servers.
The technical implementation of this vulnerability involves memory corruption issues that occur during the processing of web content within iTunes Store browsing contexts. When users navigate the iTunes Store or interact with web-based elements within the application, the WebKit engine's handling of certain malformed or malicious web responses can lead to improper memory management and potential code execution. This memory corruption typically manifests as buffer overflows or use-after-free conditions that can be leveraged by attackers to inject and execute malicious code within the iTunes process context. The vulnerability's classification aligns with CWE-125, which addresses out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write conditions, both of which are common in web rendering engine vulnerabilities. The attack requires an adversary to position themselves between the user and the iTunes Store server, making it a classic man-in-the-middle scenario that exploits the trust relationship between the client application and remote web services.
The operational impact of CVE-2011-3239 extends beyond simple application crashes to potentially enable full system compromise through arbitrary code execution capabilities. When successfully exploited, the vulnerability could allow attackers to gain control over the iTunes application process and potentially escalate privileges to execute malicious payloads with the same privileges as the user running iTunes. This creates significant risk for users who regularly access the iTunes Store or download content through the application, as the attack vector does not require user interaction beyond normal browsing activities. The denial of service component of the vulnerability can also be leveraged to disrupt legitimate user activities, causing application instability and preventing access to iTunes Store services. Organizations and individuals using affected iTunes versions face potential exposure to malware delivery, data theft, or system compromise, particularly in environments where network traffic interception is possible.
Mitigation strategies for CVE-2011-3239 primarily focus on immediate software updates and network security measures to prevent exploitation. The most effective solution involves upgrading to Apple iTunes version 10.5 or later, which includes patches specifically addressing the WebKit memory corruption issues in iTunes Store browsing functionality. System administrators should implement network monitoring to detect unusual traffic patterns that might indicate man-in-the-middle attacks targeting this vulnerability. Additional protective measures include implementing secure communication protocols such as HTTPS with certificate pinning, network segmentation to limit exposure, and regular security assessments of iTunes usage within organizational environments. The vulnerability's characteristics align with ATT&CK technique T1190, which covers exploitation of remote services, and T1059, which addresses command and scripting interpreters, as attackers could potentially leverage the arbitrary code execution capability to establish persistent access or deploy additional malicious tools. Organizations should also consider implementing application whitelisting policies to restrict iTunes execution in high-security environments until proper patches are deployed.