CVE-2012-0633 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-2012-0633 represents a critical memory corruption flaw within WebKit engine components that power Apple's mobile operating system iOS and desktop media application iTunes. This security issue affects versions of iOS prior to 5.1 and iTunes prior to 10.6, creating a significant attack surface for remote threat actors who can exploit this weakness through maliciously crafted web content. The vulnerability operates by leveraging memory corruption techniques that can lead to arbitrary code execution or deliberate application crashes, making it particularly dangerous for users who browse the internet or interact with web-based content.
The technical nature of this vulnerability stems from improper memory handling within WebKit's rendering engine, which processes and displays web content across Apple's ecosystem. When users visit compromised websites or encounter specially crafted web pages, the vulnerable WebKit component fails to properly validate or manage memory allocations, leading to buffer overflows or other memory corruption conditions. These memory management failures create opportunities for attackers to inject malicious code that can execute with the privileges of the affected application, potentially allowing full system compromise. The flaw operates at a fundamental level within the browser engine's memory management subsystem, making it particularly challenging to detect and mitigate through traditional security measures.
The operational impact of CVE-2012-0633 extends beyond simple denial of service conditions to encompass full system compromise capabilities that can result in unauthorized data access, persistent malware installation, and complete loss of system integrity. Attackers exploiting this vulnerability can remotely take control of iOS devices or desktop systems, potentially accessing sensitive user data, intercepting communications, or using the compromised systems as launch points for further attacks. The vulnerability's classification aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-122, which covers buffer overflow vulnerabilities. From an adversarial perspective, this flaw maps directly to ATT&CK technique T1059, specifically the execution of malicious code through compromised applications, and T1203, which involves the use of malicious web content for initial access.
Mitigation strategies for this vulnerability require immediate patching of affected systems through official Apple updates, as the flaw cannot be effectively addressed through network-level firewalls or traditional endpoint protection measures. Users should prioritize updating to iOS 5.1 or later versions and iTunes 10.6 or later, which contain the necessary security patches to address the memory corruption issues. System administrators should implement comprehensive monitoring for suspicious web traffic patterns and ensure that all Apple devices within their networks receive timely security updates. Additionally, organizations should consider implementing web filtering solutions and user education programs to reduce exposure to potentially malicious web content that could exploit this vulnerability. The remediation process must be thorough and systematic, as partial updates or delayed patching can leave systems vulnerable to exploitation.