A vulnerability in multiple Apple products could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition.
The vulnerability is due to memory corruption errors in the WebKit component of the affected software. An attacker could exploit this vulnerability by persuading a user to visit a malicious web page. If successful, the attacker could execute arbitrary code or cause a DoS condition on the system.
Apple has confirmed the vulnerability and released software updates.
Indicators of Compromise
The following Apple products are vulnerable:
Apple iTunes versions prior to 10.7
Safari versions prior to 6.0.1
Apple iOS versions prior to 6
The vulnerability is in StyleResolver::styleForElement function in the WebCore/css/StyleResolver.cpp source code. The vulnerable function accepts certain user-supplied data and may be used to modify the length of the array, which causes a memory corruption error.
An unauthenticated, remote attacker could exploit this vulnerability by persuading a targeted user to visit a malicious web page that is designed to submit crafted input to the vulnerable component. Processing the web page could trigger a memory corruption error, allowing the attacker to execute arbitrary code or cause a DoS condition the system.
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.
Administrators are advised to apply the appropriate updates.
Users should verify that unsolicited links are safe to follow.
Administrators are advised to monitor affected systems.
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Cisco Multivendor Vulnerability Alerts respond to vulnerabilities identified in third-party vendors' products. These alerts contain information compiled from diverse sources and provide comprehensive technical descriptions, objective analytical assessments, workarounds and practical safeguards, and links to vendor advisories and patches.