CVE-2015-5803

Vulnerability

CVE-2015-5803 is a memory corruption vulnerability in WebKit, the rendering engine used by Apple iOS and iTunes. The flaw exists in the processing of crafted web content and can be triggered when a user visits a malicious website. Affected versions include Apple iOS prior to 9 and iTunes prior to 12.3 [1][3].

Exploitation

An attacker can exploit this vulnerability by hosting a specially crafted website and luring a victim to visit it. No additional authentication or user interaction beyond visiting the site is required. The attacker does not need any special network position beyond serving the malicious content over the web.

Impact

Successful exploitation allows a remote attacker to execute arbitrary code on the target device or cause a denial of service (application crash). The attacker gains the ability to run code at the privilege level of the WebKit process, which could lead to full compromise of the affected application or system.

Mitigation

Apple addressed this vulnerability in iOS 9 (released September 16, 2015) and iTunes 12.3 (released September 16, 2015) [1][3]. Users should update to these versions or later. No workarounds are available for unpatched systems.