CVE-2012-0602 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-2012-0602 represents a critical memory corruption flaw within WebKit engine components that power Apple's mobile and desktop operating systems. This issue 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 system access. The vulnerability resides in how WebKit processes certain web content, specifically when handling crafted websites that contain maliciously constructed data structures or memory allocations.
The technical implementation of this vulnerability demonstrates a classic memory corruption exploit pattern where attacker-controlled input triggers improper memory handling within the WebKit rendering engine. When users visit a malicious website, the browser engine processes the content in a manner that leads to memory corruption, potentially allowing remote code execution or system instability. This flaw operates at the intersection of browser engine security and memory management, where improper bounds checking or unsafe memory operations create opportunities for 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, both of which are common precursors to arbitrary code execution exploits.
From an operational perspective, this vulnerability presents a substantial risk to end users who may inadvertently visit malicious websites while browsing the internet. The attack vector is particularly dangerous because it leverages the trust users place in web browsing activities, making it difficult to defend against through traditional user awareness measures alone. When exploited, the vulnerability can result in complete system compromise or denial of service conditions that render applications unusable. The impact extends beyond individual user devices to potentially affect enterprise environments where mobile device management policies may not adequately protect against such browser-based attacks. Security researchers have noted that this vulnerability's exploitation requires sophisticated techniques due to modern memory protection mechanisms, yet remains viable against older system versions that lack contemporary security mitigations.
Organizations and users should prioritize immediate remediation through official software updates provided by Apple, specifically upgrading to iOS 5.1 or later versions and iTunes 10.6 or newer. System administrators should implement network-level protections such as web content filtering and browser sandboxing to reduce exposure while awaiting patches. The vulnerability's relationship to the broader WebKit security landscape indicates that similar issues may exist in other browser engines, making it essential to maintain comprehensive patch management programs. Security professionals should also consider implementing behavioral monitoring solutions that can detect anomalous memory access patterns or unexpected application crashes that may indicate exploitation attempts. The ATT&CK framework categorizes this vulnerability under the technique of "Exploitation for Privilege Escalation" and "Remote Services" as attackers leverage web browsers as initial access vectors to establish persistent presence on target systems.