CVE-2012-0616 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 • 01/11/2025
The vulnerability identified as CVE-2012-0616 represents a critical memory corruption flaw within WebKit, the web browser engine that powers Apple's iOS operating system and iTunes software. This vulnerability affects versions of Apple iOS prior to 5.1 and iTunes versions prior to 10.6, creating a significant security gap that malicious actors could exploit to gain unauthorized access to affected systems. The flaw resides in how WebKit processes certain web content, specifically when handling crafted websites that contain maliciously constructed data structures or memory allocations. The vulnerability operates through a sophisticated attack vector that leverages memory corruption techniques to potentially execute arbitrary code on vulnerable systems, making it particularly dangerous for users who browse the internet regularly.
The technical implementation of this vulnerability demonstrates a classic memory safety issue that falls under the CWE-119 category of "Improper Access to Memory" and more specifically aligns with CWE-787 "Out-of-bounds Write" or similar memory corruption patterns. The flaw manifests when WebKit encounters specially crafted web content that triggers improper memory handling during rendering or processing operations. Attackers can construct malicious websites containing malformed data structures or exploit specific JavaScript or HTML elements that cause buffer overflows, use-after-free conditions, or other memory corruption scenarios. These conditions can lead to unpredictable behavior where the application's memory space becomes corrupted, potentially allowing attackers to overwrite critical memory locations or redirect execution flow. The vulnerability is particularly concerning because it enables remote code execution, meaning attackers do not need physical access to the device or any special privileges to exploit the flaw.
The operational impact of CVE-2012-0616 extends beyond simple application crashes or denial of service conditions, as it represents a full remote code execution vulnerability that can be leveraged for sophisticated attacks. When successfully exploited, this vulnerability allows attackers to execute arbitrary code on affected devices, potentially enabling complete system compromise, data exfiltration, or installation of persistent malware. The attack surface is broad since it affects web browsing activities across multiple Apple platforms, making it particularly dangerous for users who frequently visit untrusted websites or download content from unknown sources. The vulnerability's similarity to other WebKit vulnerabilities referenced in APPLE-SA-2012-03-07-1 and APPLE-SA-2012-03-07-2 indicates a pattern of memory corruption issues within the WebKit engine, suggesting that the underlying architecture may have systemic weaknesses in memory management and input validation. This makes the vulnerability particularly dangerous as it could be combined with other exploits or used as a stepping stone for more comprehensive attacks.
Organizations and individuals affected by this vulnerability should immediately implement mitigation strategies focusing on system updates and security hardening measures. The primary remediation approach involves updating to Apple iOS 5.1 or later versions and iTunes 10.6 or later, which contain patches addressing the memory corruption issues. Additionally, security professionals should implement network-level protections such as web content filtering, browser security extensions, and monitoring for suspicious web traffic patterns. The vulnerability's characteristics align with ATT&CK technique T1059.007 for Command and Scripting Interpreter: JavaScript, as attackers may leverage JavaScript execution to trigger the memory corruption. Organizations should also consider implementing sandboxing measures and restricting web browsing privileges on sensitive systems. Regular security assessments and vulnerability scanning should be conducted to identify any remaining exposure risks, as the vulnerability's memory corruption nature makes it particularly difficult to detect through standard network monitoring tools. The patching process should be prioritized as a critical security measure, as the vulnerability's remote exploitability means that systems remain at risk until properly updated.