CVE-2012-0596 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-2012-0596 represents a critical memory corruption flaw within WebKit engine components that power Apple's iOS and iTunes applications. This vulnerability specifically affects versions of Apple iOS prior to 5.1 and iTunes versions before 10.6, creating a significant security gap that malicious actors could exploit to gain unauthorized system access or disrupt normal application functionality. The flaw manifests through crafted web content that, when rendered by the affected WebKit components, triggers unpredictable memory behavior leading to potential code execution or system crashes.
The technical nature of this vulnerability stems from improper memory handling within WebKit's rendering engine, where insufficient input validation and memory management controls allow attackers to manipulate memory structures through specially crafted web pages. This type of vulnerability falls under the CWE-125 weakness category, which encompasses out-of-bounds read errors that can lead to memory corruption and arbitrary code execution. The flaw operates at the intersection of browser engine security and memory safety, where the WebKit engine fails to properly validate memory access patterns when processing malicious web content, creating opportunities for attackers to overwrite memory locations or execute unintended code sequences.
From an operational perspective, this vulnerability presents a substantial risk to users of affected Apple products as it enables remote code execution without requiring user interaction beyond visiting a malicious website. The attack vector leverages the web browsing capabilities of iOS devices and iTunes applications, making it particularly dangerous in environments where users frequently access untrusted web content. Security analysts have categorized this vulnerability as a remote exploitation risk, meaning attackers can compromise systems simply by hosting malicious content on web servers accessible to vulnerable users. The potential for denial of service attacks alongside arbitrary code execution capabilities makes this vulnerability particularly concerning for enterprise environments and mobile device management.
The impact of this vulnerability extends beyond simple application crashes to potentially enable full system compromise, as memory corruption flaws often provide pathways for privilege escalation attacks. This aligns with ATT&CK framework techniques such as T1059 for command and scripting interpreter and T1068 for exploit for privilege escalation, where attackers could leverage the initial memory corruption to gain deeper system access. Organizations should consider implementing network-based protections and ensuring prompt patch deployment as mitigation strategies, though the specific nature of memory corruption vulnerabilities often requires complete system updates rather than simple configuration changes. The vulnerability demonstrates the critical importance of timely security updates in mobile operating systems and desktop applications, as the window of exposure for such fundamental engine flaws can be extensive.