CVE-2011-2339 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-2011-2339 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 falls under the category of man-in-the-middle attacks, where malicious actors can exploit the insecure implementation of web content handling to compromise system integrity. The flaw manifests during the processing of web content retrieved from iTunes Store servers, creating a pathway for attackers to either execute arbitrary code on affected systems or trigger memory corruption that results in application crashes and denial of service conditions.
The technical implementation of this vulnerability stems from improper handling of web resources within the WebKit engine's memory management subsystem. When iTunes processes content from the iTunes Store, the rendering engine fails to properly validate or sanitize incoming web data, leading to potential buffer overflows or memory corruption issues. This type of vulnerability is classified as a memory corruption flaw that can be leveraged for privilege escalation or arbitrary code execution. The vulnerability's classification aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write operations. The specific nature of the flaw indicates that attackers can manipulate the web content processing pipeline to cause the application to write data beyond allocated memory boundaries, resulting in unpredictable behavior and potential system compromise.
The operational impact of CVE-2011-2339 extends beyond simple application instability, as it provides attackers with a mechanism to gain unauthorized code execution privileges on targeted systems. When exploited, this vulnerability can allow attackers to install malicious software, access sensitive user data, or establish persistent backdoors within the affected environment. The denial of service aspect creates additional operational concerns, as legitimate users may experience frequent application crashes and service interruptions during iTunes Store browsing activities. Organizations and individuals using affected versions of iTunes face significant risk exposure, particularly in environments where the application is frequently used to access online content or make purchases. The vulnerability's relationship to other security advisories referenced in APPLE-SA-2011-10-11-1 indicates that it represents a distinct but related class of flaws within the iTunes security framework, suggesting potential systemic issues in the application's web content handling architecture.
Mitigation strategies for this vulnerability require immediate patch deployment to update iTunes to version 10.5 or later, which contains the necessary security fixes to address the WebKit memory corruption issues. System administrators should implement network monitoring to detect potential exploitation attempts and establish secure communication protocols to reduce man-in-the-middle attack surface. The vulnerability's characteristics suggest that users should avoid accessing iTunes Store content through untrusted networks or public Wi-Fi connections until the patch is applied. Additionally, organizations should consider implementing application whitelisting policies to restrict the execution of unpatched iTunes versions and maintain regular security assessments to identify similar vulnerabilities in other web-based applications. The remediation process should also include user education about the risks of accessing online content through potentially compromised networks and the importance of keeping software updated. This vulnerability serves as a reminder of the critical importance of maintaining up-to-date security patches, particularly for applications that process web content and handle sensitive user transactions.