CVE-2011-0126 in iTunes
Summary
by MITRE
WebKit, as used in Apple iTunes before 10.2 on Windows, 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-2011-03-02-1.
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Analysis
by VulDB Data Team • 01/26/2025
The vulnerability identified as CVE-2011-0126 represents a critical security flaw in Apple iTunes version 10.1 and earlier on Windows platforms, specifically within the WebKit rendering engine component. This vulnerability arises from insufficient input validation and memory management practices during iTunes Store browsing operations, creating an exploitable condition that adversaries can leverage for malicious purposes. The flaw manifests when iTunes processes web content from the iTunes Store, particularly in scenarios involving dynamic content loading and memory allocation. The vulnerability is classified under CWE-125 as an out-of-bounds read condition, which can lead to memory corruption and subsequent arbitrary code execution. The issue is distinct from other vulnerabilities addressed in APPLE-SA-2011-03-02-1, indicating a separate attack surface within the iTunes application architecture.
The technical exploitation of this vulnerability occurs through man-in-the-middle attack scenarios where attackers can manipulate network traffic between the iTunes client and Apple's iTunes Store servers. When users browse the iTunes Store within the iTunes application, the WebKit engine processes HTML and JavaScript content that may contain malicious payloads. The flaw allows attackers to inject crafted content that triggers memory corruption during the rendering process, potentially leading to heap-based buffer overflows or other memory management errors. This type of vulnerability aligns with ATT&CK technique T1059.007 for script-based execution and T1557.001 for credential access through interception. The memory corruption can manifest as application crashes or more severely, allow remote code execution when the corrupted memory is subsequently accessed by the application's execution flow.
The operational impact of CVE-2011-0126 extends beyond simple application instability to potentially enable full system compromise. When exploited successfully, this vulnerability can allow attackers to execute arbitrary code with the privileges of the iTunes process, which typically runs with user-level permissions but may have access to sensitive system resources. The denial of service component of this vulnerability can be used to disrupt legitimate iTunes usage, causing application crashes and preventing users from accessing the iTunes Store or downloading content. From a broader security perspective, this vulnerability demonstrates the risks associated with embedding web rendering capabilities within desktop applications, particularly when those components are not adequately hardened against malicious input. The vulnerability affects a significant user base since iTunes was widely distributed and used for legitimate media management activities, making it an attractive target for threat actors seeking to exploit user trust in the application.
Mitigation strategies for CVE-2011-0126 should prioritize immediate patch deployment as the primary defense mechanism, with Apple releasing iTunes 10.2 to address the specific memory corruption issues. Network administrators should implement additional protective measures including traffic monitoring for unusual patterns during iTunes Store browsing and consideration of network segmentation to limit potential attack vectors. Users should be educated about the risks of browsing untrusted content within iTunes and encouraged to keep their applications updated. The vulnerability highlights the importance of proper memory management practices in web rendering engines and the need for comprehensive input validation. Security professionals should monitor for similar vulnerabilities in other applications that embed WebKit or similar rendering components, as this type of flaw represents a common attack pattern in modern software applications. Organizations should also consider implementing network-based intrusion detection systems to identify potential exploitation attempts targeting this specific vulnerability. The remediation process should include thorough testing of patched versions to ensure that the fix does not introduce compatibility issues with existing iTunes functionality while maintaining the security enhancements necessary to prevent exploitation.