CVE-2012-0631 in iOS
Summary
by MITRE
WebKit, as used in Apple iOS before 5.1 and iTunes before 10.6, 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-2012-03-07-1 and APPLE-SA-2012-03-07-2.
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Analysis
by VulDB Data Team • 01/12/2025
The vulnerability identified as CVE-2012-0631 represents a critical memory corruption flaw within WebKit, the rendering engine that powers Apple's Safari browser and various other applications across iOS and iTunes ecosystems. This vulnerability specifically affects Apple iOS versions prior to 5.1 and iTunes versions before 10.6, creating a significant attack surface that malicious actors could exploit to gain unauthorized code execution capabilities. The flaw demonstrates the inherent complexity of modern web rendering engines and their susceptibility to sophisticated exploitation techniques that leverage memory management vulnerabilities.
The technical nature of this vulnerability stems from improper memory handling within WebKit's implementation, where crafted web content can trigger memory corruption conditions that lead to unpredictable application behavior. Attackers can construct malicious websites containing specially designed HTML, JavaScript, or other web elements that, when rendered by the vulnerable WebKit engine, cause memory corruption issues. These memory corruption conditions typically manifest through buffer overflows, use-after-free errors, or other memory management flaws that allow attackers to manipulate program execution flow. The vulnerability's classification aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write operations that can lead to arbitrary code execution.
The operational impact of CVE-2012-0631 extends beyond simple denial of service scenarios, as it enables remote code execution capabilities that could allow attackers to fully compromise affected devices. When exploited successfully, this vulnerability could result in complete system compromise, data theft, or persistent backdoor installation on iOS devices and computers running vulnerable iTunes versions. The attack vector is particularly concerning because it requires no user interaction beyond visiting a malicious website, making it a prime candidate for drive-by download attacks. This vulnerability's potential for widespread exploitation aligns with ATT&CK technique T1203, which covers exploitation for client execution through web-based attacks that leverage browser vulnerabilities.
The security implications of this vulnerability highlight the critical importance of timely patch management and the inherent risks associated with complex software components like web rendering engines. Organizations and individual users running affected versions of iOS or iTunes faced significant exposure to attacks that could result in complete device compromise. The vulnerability's discovery and subsequent patching process underscores the ongoing arms race between security researchers and malicious actors, where zero-day exploits often remain undetected for extended periods. Mitigation strategies required immediate deployment of Apple's security updates, but the window of exposure between vulnerability disclosure and patch availability created substantial risk for users who delayed system updates. This vulnerability serves as a critical reminder of the importance of maintaining current security patches and the potential consequences of operating on outdated software versions that may contain unpatched security flaws.