CVE-2011-0120 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 • 10/18/2021
The vulnerability identified as CVE-2011-0120 represents a critical security flaw in Apple iTunes version 10.1 and earlier on Windows platforms, specifically within the WebKit rendering engine component. This issue manifests as a remote code execution vulnerability that enables man-in-the-middle attackers to compromise the affected system through iTunes Store browsing activities. The vulnerability stems from improper handling of web content within the iTunes application's web browser component, creating a pathway for malicious actors to inject and execute arbitrary code on target systems. The flaw operates through a memory corruption mechanism that can lead to application crashes or more severe system compromise, making it particularly dangerous in enterprise and consumer environments where iTunes is commonly used for media management and digital store interactions.
The technical implementation of this vulnerability involves WebKit's processing of web content during iTunes Store browsing operations, where insufficient input validation and memory management controls allow attackers to craft malicious web responses that trigger buffer overflows or other memory corruption conditions. When iTunes processes these malformed web responses, the underlying WebKit engine fails to properly sanitize the data, leading to memory corruption that can be exploited to execute arbitrary code with the privileges of the iTunes process. This type of vulnerability falls under the CWE-121 category of Stack-based Buffer Overflow, though the specific implementation involves heap corruption mechanisms typical of modern web browser exploits. The vulnerability is particularly concerning because it leverages the trust relationship between iTunes and the iTunes Store, making it difficult for users to detect malicious activity during normal browsing operations.
The operational impact of CVE-2011-0120 extends beyond simple application crashes to encompass full system compromise potential, as the exploited memory corruption allows attackers to execute malicious code with elevated privileges. This vulnerability could enable attackers to install malware, steal user credentials, access sensitive data, or establish persistent backdoors on compromised systems. The man-in-the-middle attack vector suggests that the vulnerability is particularly dangerous in public Wi-Fi networks or corporate environments where network traffic interception is feasible. Security researchers have noted that this vulnerability operates at the application layer, making it difficult to detect through traditional network-based security measures, and requires endpoint protection and application-level monitoring to identify exploitation attempts.
Mitigation strategies for this vulnerability should include immediate deployment of Apple's security update 10.2 which addresses the WebKit memory corruption issue through proper input validation and memory management improvements. Organizations should implement network segmentation and traffic monitoring to detect unusual iTunes Store browsing patterns that might indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter: Windows Command Shell, as successful exploitation could enable attackers to execute commands through the compromised iTunes process. Additionally, security teams should consider implementing application whitelisting policies that restrict iTunes execution to trusted environments and regularly audit system configurations to prevent unauthorized iTunes installations that might be vulnerable to this class of attack. The remediation process should also include user education about the risks of connecting to untrusted networks while using iTunes Store browsing functionality, as this vulnerability specifically targets the trust relationship between the application and its online services.