CVE-2012-3701 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
CVE-2012-3701 represents a critical memory corruption vulnerability within WebKit engine that was embedded in Apple iTunes version 10.6 and earlier. This vulnerability stems from improper handling of malformed web content within the browser component that iTunes utilized for displaying web-based interfaces and content. The flaw exists in the way WebKit processes certain HTML elements and JavaScript constructs, leading to buffer overflows and memory corruption issues that can be exploited by remote attackers to gain arbitrary code execution privileges. The vulnerability is particularly concerning because it leverages the same WebKit engine that powers Safari, making it susceptible to exploitation through malicious websites that could be accessed via iTunes' web browsing functionality.
The technical implementation of this vulnerability involves specific memory manipulation patterns that occur when WebKit attempts to render crafted HTML content containing malformed JavaScript or DOM elements. Attackers can construct malicious web pages that trigger memory corruption through improper bounds checking during HTML parsing or JavaScript execution phases. The memory corruption manifests as heap corruption or stack overflow conditions that can be leveraged to overwrite critical memory locations, potentially allowing attackers to redirect program execution flow to malicious code payloads. This type of vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and CWE-125, which addresses out-of-bounds read conditions that can lead to memory corruption.
From an operational perspective, this vulnerability poses significant risks to users who frequently access web content through iTunes, particularly when browsing untrusted websites or encountering malicious advertisements. The exploitation can result in complete system compromise, as attackers can execute arbitrary code with the privileges of the iTunes process, potentially leading to full system takeover. Additionally, the vulnerability can be used for denial of service attacks, causing iTunes to crash repeatedly and rendering the application unusable. The impact extends beyond individual users to enterprise environments where iTunes might be used for software distribution or management purposes, potentially providing attackers with persistent access points within network infrastructure.
The exploitation of this vulnerability requires attackers to craft specific web content that triggers the memory corruption in WebKit's rendering engine, typically involving malformed HTML or JavaScript constructs that cause buffer overflows. Attackers often leverage social engineering techniques to convince users to visit malicious websites, or they may embed the malicious content within legitimate-looking web pages to avoid detection. This vulnerability can be classified under the ATT&CK framework's technique T1059 for execution through scripting and T1203 for exploitation of web applications. The attack chain typically involves initial access through web browsing, followed by code execution and potential privilege escalation to system-level access.
Mitigation strategies for CVE-2012-3701 primarily involve immediate patching of iTunes to version 10.7 or later, which contains the necessary WebKit security updates and memory corruption fixes. Organizations should implement strict web browsing policies that limit access to untrusted websites and disable unnecessary web functionality within iTunes. Network-level protections such as web proxies and content filtering systems can help prevent access to malicious sites that may exploit this vulnerability. Additionally, users should be educated about the risks of visiting untrusted websites and the importance of keeping software updated. Regular security assessments and vulnerability scanning should be conducted to identify any remaining exposure risks, particularly in environments where iTunes is used for enterprise software distribution or management purposes. The patch released by Apple addresses the core memory corruption issues in WebKit's HTML parsing and JavaScript engine components, effectively closing the exploit window for this specific vulnerability.