CVE-2012-0624 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-2012-0624 represents a critical memory corruption flaw within WebKit engine components that power Apple 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 control over affected systems. The flaw manifests through crafted websites that trigger memory corruption conditions, potentially leading to arbitrary code execution or deliberate application crashes that disrupt normal system operations.
The technical nature of this vulnerability resides in improper memory handling within WebKit's rendering engine, where input validation fails to properly sanitize user-supplied content from web pages. When a user visits a maliciously crafted website, the WebKit engine processes the malformed content without adequate safeguards, resulting in memory corruption that can be leveraged by attackers to execute malicious code with the privileges of the affected application. This type of vulnerability falls under the category of memory safety issues commonly classified as CWE-125, which deals with out-of-bounds read conditions, and CWE-787, which addresses out-of-bounds write conditions. The vulnerability demonstrates characteristics consistent with heap-based buffer overflow exploits that have been documented in various security research publications.
From an operational perspective, this vulnerability presents a severe risk to end-users who may inadvertently visit compromised websites while browsing the internet on affected Apple devices. The attack surface extends beyond simple web browsing to include any application that utilizes WebKit for rendering web content, including email clients and web-based applications within the iOS ecosystem. The potential for remote code execution means that attackers could install malicious software, access sensitive user data, or completely compromise the device's security posture. The denial of service component of this vulnerability further compounds the risk by allowing attackers to crash applications repeatedly, potentially rendering devices unusable and forcing users to restart their systems.
The exploitation of CVE-2012-0624 aligns with tactics documented in the MITRE ATT&CK framework under the Tactic of Execution and Defense Evasion. Attackers leveraging this vulnerability would typically employ techniques such as crafting malicious web content that triggers the memory corruption, followed by code injection to establish persistent access. The vulnerability's classification as a remote code execution flaw places it within the ATT&CK technique T1059 for command and scripting interpreter, and T1068 for exploit for privilege escalation. Organizations and users should consider this vulnerability as part of a broader attack vector that could lead to complete system compromise, especially when combined with other vulnerabilities in the same software ecosystem.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected systems, with Apple releasing iOS 5.1 and iTunes 10.6 updates that address the memory corruption issues. System administrators should implement web filtering solutions and browser security enhancements to prevent access to known malicious sites. Additionally, users should be educated about the risks of visiting untrusted websites and should maintain regular software update schedules. The vulnerability serves as a reminder of the importance of keeping all software components updated, particularly browser engines and web rendering libraries that form the foundation of modern web browsing experiences. Organizations should also consider implementing network monitoring to detect potential exploitation attempts and establish incident response procedures for handling potential compromises.