CVE-2015-5810

Vulnerability

CVE-2015-5810 is a memory corruption vulnerability in WebKit, the rendering engine used in Apple iOS before 9 and iTunes before 12.3. The bug allows remote attackers to trigger arbitrary code execution or denial of service (application crash) by enticing a user to visit a specially crafted website. The affected versions include iOS 8.x and earlier, and iTunes 12.2.x and earlier on Windows 7 and later. [1][3]

Exploitation

An attacker must host a malicious website and trick a user into visiting it. No additional authentication or privileges are required beyond normal web browsing. The exploit leverages crafted HTML/JavaScript content that triggers memory corruption during WebKit's processing, leading to controlled memory corruption. The exact exploitation sequence has not been publicly detailed by Apple.

Impact

Successful exploitation could allow arbitrary code execution in the context of the affected application (Safari on iOS or the WebKit component in iTunes), potentially leading to full system compromise on iOS or arbitrary code execution on the user's Windows system. Alternatively, an attacker could cause a denial of service (application crash). The vulnerability is rated high severity.

Mitigation

Apple released fixes in iOS 9 on September 16, 2015, and iTunes 12.3 on the same date [1][3]. Users should update to iOS 9 or later, or iTunes 12.3 or later. No workarounds are available. This vulnerability is not listed on CISA's Known Exploited Vulnerabilities (KEV) catalog.