CVE-2012-0603 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-2012-0603 represents a critical memory corruption flaw within WebKit engine components that power Apple's iOS operating system and iTunes software. This vulnerability specifically affects versions of Apple iOS prior to 5.1 and iTunes versions before 10.6, creating a significant security risk for users of these platforms. The flaw resides in how WebKit processes certain web content, enabling malicious actors to exploit memory handling mechanisms through crafted web pages that could lead to arbitrary code execution or system crashes.
The technical nature of this vulnerability stems from improper memory management within WebKit's rendering engine, which processes web content for display in web browsers and web-based applications. When users visit malicious websites containing specially crafted content, the WebKit engine fails to properly validate or sanitize memory operations, leading to buffer overflows or memory corruption conditions. This memory corruption can be exploited to overwrite critical memory locations, potentially allowing attackers to execute malicious code with the privileges of the affected application. The vulnerability is classified as a heap-based buffer overflow or similar memory corruption issue, which falls under CWE-121 Heap-based Buffer Overflow and CWE-122 Stack-based Buffer Overflow categories.
The operational impact of this vulnerability extends beyond simple application crashes, as it provides remote attackers with the capability to execute arbitrary code on targeted systems. This means that users visiting compromised websites could have their devices compromised without any user interaction beyond navigating to the malicious site. The vulnerability affects both iOS devices and desktop iTunes applications, creating a broad attack surface that could be exploited across multiple Apple platforms. The memory corruption issues could result in complete system compromise, data theft, or persistent backdoor installations, making this a particularly dangerous vulnerability in the context of mobile and desktop computing environments.
Security professionals should note that this vulnerability is distinct from other WebKit-related issues documented in Apple security advisories from the same period, indicating that it represents a separate code path or memory handling mechanism within the WebKit engine. The attack vector relies on web-based exploitation, making it particularly concerning for mobile users who frequently browse the internet on iOS devices. Mitigation strategies should include immediate deployment of Apple's security patches for iOS 5.1 and iTunes 10.6, along with network-level protections such as web filtering solutions and browser security enhancements. Organizations should also implement network monitoring to detect potential exploitation attempts and user education regarding safe browsing practices. This vulnerability demonstrates the importance of comprehensive memory safety testing and the need for robust input validation in web rendering engines, aligning with ATT&CK techniques related to privilege escalation and code injection through memory corruption vulnerabilities.