CVE-2012-0589 in iOS
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in WebKit, as used in Apple iOS before 5.1, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, a different vulnerability than CVE-2012-0586, CVE-2012-0587, and CVE-2012-0588.
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Analysis
by VulDB Data Team • 11/30/2021
The vulnerability identified as CVE-2012-0589 represents a critical cross-site scripting flaw within the WebKit rendering engine that powers Apple iOS browsers and web applications. This vulnerability specifically affected iOS versions prior to 5.1 and enabled remote attackers to execute malicious scripts within the context of web applications, potentially compromising user sessions and data integrity. The flaw resides in how WebKit processes and renders web content, creating opportunities for attackers to inject malicious code that executes in users' browsers without their knowledge or consent.
WebKit's rendering engine processes HTML and JavaScript content in a manner that fails to properly sanitize user-supplied input, allowing attackers to craft malicious payloads that bypass security mechanisms. The vulnerability manifests through unspecified vectors that could include malformed HTML attributes, improperly handled JavaScript events, or unexpected input processing within the browser's rendering pipeline. This type of flaw falls under the CWE-79 category of Cross-Site Scripting, specifically representing a stored or reflected XSS vulnerability where malicious code can be executed when users navigate to compromised web pages.
The operational impact of CVE-2012-0589 extends beyond simple script injection, as it enables attackers to perform session hijacking, steal sensitive information, manipulate web content, and potentially redirect users to malicious sites. Mobile users running affected iOS versions were particularly vulnerable since the WebKit engine is integral to Safari and all web-based applications on the platform. Attackers could exploit this vulnerability through compromised websites, malicious advertisements, or phishing campaigns that deliver crafted payloads designed to exploit the specific WebKit parsing flaw. The vulnerability's relationship to other CVEs in the same year demonstrates a pattern of WebKit rendering engine weaknesses that required comprehensive patching strategies.
Organizations and users affected by this vulnerability should prioritize immediate system updates to iOS 5.1 or later versions that contain the necessary WebKit security patches. Network administrators should implement web application firewalls and content filtering solutions to detect and block known malicious patterns, while security teams should conduct comprehensive vulnerability assessments of web applications that may be exposed to similar XSS attack vectors. The ATT&CK framework categorizes this vulnerability under the T1059.007 technique for 'Command and Scripting Interpreter: JavaScript', highlighting the need for robust input validation and output encoding mechanisms. Additionally, implementing Content Security Policy headers and adopting secure coding practices that properly sanitize user input can significantly reduce the risk of exploitation. This vulnerability underscores the critical importance of maintaining up-to-date mobile operating systems and demonstrates how browser engine vulnerabilities can create widespread security implications across mobile platforms.