CVE-2011-0139 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-2011-0139 represents a critical security flaw in Apple iTunes version 10.1 and earlier on Windows platforms. This issue resides within the WebKit rendering engine component that Apple utilizes for displaying content within iTunes, specifically during iTunes Store browsing operations. The vulnerability stems from inadequate handling of certain network communications and memory management scenarios that occur when users interact with the iTunes Store interface. The flaw creates an exploitable condition that can be leveraged by malicious actors positioned between the user and the iTunes Store servers, effectively enabling man-in-the-middle attack scenarios. This particular vulnerability differs from other issues addressed in APPLE-SA-2011-03-02-1, indicating it operates through distinct attack vectors and exploitation mechanisms.
The technical implementation of this vulnerability involves memory corruption issues that arise during the processing of web content retrieved from iTunes Store servers. When iTunes handles certain responses or data streams from the iTunes Store, the WebKit engine fails to properly validate or sanitize incoming data, leading to potential buffer overflows or other memory corruption conditions. These memory management failures can result in arbitrary code execution when malicious data is processed by the vulnerable iTunes application. The vulnerability specifically manifests during browsing operations within the iTunes Store environment, where the application receives and renders web-based content that may contain malicious payloads designed to exploit the memory handling flaws. The exploitation process typically requires an attacker to intercept network traffic between the iTunes client and iTunes Store servers, making this a classic man-in-the-middle attack scenario.
The operational impact of CVE-2011-0139 extends beyond simple application crashes or denial of service conditions to encompass potential full system compromise. When successfully exploited, the memory corruption vulnerabilities can enable attackers to execute arbitrary code with the privileges of the iTunes process, which typically runs with elevated permissions on Windows systems. This could allow adversaries to install malware, modify system files, or establish persistent backdoors within affected systems. The vulnerability affects a significant user base since iTunes was widely distributed and used for music management and digital content purchasing. The attack surface is particularly concerning because iTunes Store browsing represents a common user activity that occurs regularly, increasing the probability of exploitation. Additionally, the vulnerability's ability to cause application crashes creates a potential for denial of service attacks that could disrupt legitimate user activities and potentially be used as part of larger attack campaigns.
Mitigation strategies for CVE-2011-0139 primarily involve immediate software updates and network security measures. Apple addressed this vulnerability through the release of iTunes version 10.2, which included patches to the WebKit engine's memory handling and data validation routines. Users should immediately upgrade to iTunes 10.2 or later versions to eliminate the risk of exploitation. Network administrators should implement additional security controls including SSL inspection capabilities, traffic monitoring, and intrusion detection systems to identify potential man-in-the-middle attack attempts. Organizations should also consider implementing network segmentation and access controls to limit the potential impact of successful exploitation. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a classic example of how web rendering engines can be exploited through improper memory management. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and code injection, with potential for lateral movement once initial compromise is achieved. The remediation process should include comprehensive testing of updated software to ensure that the patches properly address the memory corruption issues without introducing new compatibility problems.