CVE-2012-3706 in iOS
Summary
by MITRE
WebKit, as used in Apple iTunes before 10.7, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2012-09-12-1.
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Analysis
by VulDB Data Team • 12/30/2024
The vulnerability identified as CVE-2012-3706 represents a critical memory corruption flaw within WebKit engine implementation in Apple iTunes version 10.6 and earlier. This vulnerability exists in the web rendering component that processes web content within the iTunes application environment, creating a pathway for remote attackers to exploit the system through maliciously crafted web content. The flaw specifically manifests when iTunes processes web pages containing specially designed elements that trigger memory corruption conditions, potentially leading to arbitrary code execution or system instability resulting in application crashes.
The technical nature of this vulnerability stems from improper memory management within WebKit's rendering engine, where insufficient input validation and memory boundary checks allow attackers to manipulate memory structures through crafted web content. This type of vulnerability falls under the CWE-125 weakness category, which describes out-of-bounds read conditions that can lead to memory corruption and arbitrary code execution. The flaw operates at the intersection of web content processing and memory management, where WebKit's parser fails to properly validate memory allocations when handling complex web elements, creating opportunities for attackers to overwrite memory locations and execute malicious code with the privileges of the iTunes process.
From an operational perspective, this vulnerability presents significant risk to users who may inadvertently visit compromised websites while iTunes is running, or when iTunes processes web content from untrusted sources. The attack vector is particularly dangerous because it leverages the web browsing capabilities of a widely used media application, extending the attack surface beyond traditional web browsers. The vulnerability can be exploited through various means including phishing attacks, malicious advertisements, or compromised websites that deliver the crafted content designed to trigger the memory corruption. This creates a persistent threat vector where users may be compromised without realizing they are visiting malicious sites, as the exploitation occurs within the legitimate iTunes application context.
The impact of exploitation can range from complete application crashes to full system compromise, depending on the specific memory corruption pattern and the attacker's ability to control execution flow. When successful, attackers can execute arbitrary code with the privileges of the iTunes process, potentially leading to privilege escalation, data theft, or further system compromise. The vulnerability's classification aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation could enable attackers to execute commands through the compromised iTunes process. Organizations and users should consider this vulnerability as part of a broader attack surface that includes not just traditional web browsers but also media applications that incorporate web rendering capabilities. The vulnerability highlights the importance of keeping all applications updated, particularly those that integrate web technologies, as the attack surface expands beyond traditional browser-based threats.
Mitigation strategies should focus on immediate patching of affected iTunes versions to 10.7 or later, where Apple has addressed the memory corruption issues through improved input validation and memory management controls. Network-level protections including web filtering and content inspection systems can provide additional defense in depth, though these may not prevent all exploitation attempts. Users should be educated about the risks of visiting untrusted websites while iTunes is running, and administrators should consider implementing application whitelisting policies to restrict iTunes access to trusted environments. Regular security monitoring and vulnerability assessment should include scanning for affected iTunes versions, as this vulnerability represents a persistent risk that could be exploited by threat actors targeting Apple ecosystem users. The remediation process should also include verifying that updates have been properly installed and that no legacy versions remain in use, as the vulnerability may persist in older deployments that have not been updated.