CVE-2015-5805

Vulnerability

WebKit, as used in Apple iOS before 9 and iTunes before 12.3, contains a memory corruption vulnerability that can be triggered by processing maliciously crafted web content. The issue is present in the WebKit rendering engine and affects all versions prior to the fixes released in iOS 9 and iTunes 12.3 [1][3]. The vulnerability is distinct from other WebKit CVEs addressed in the same security updates.

Exploitation

An attacker can exploit this vulnerability by hosting a crafted website that, when visited by a user on an affected device, triggers memory corruption in WebKit. No additional authentication or user interaction beyond visiting the site is required. The attacker must lure the user to the malicious site, typically through social engineering or by compromising a legitimate site.

Impact

Successful exploitation allows a remote attacker to execute arbitrary code on the target device or cause a denial of service (application crash). The code execution occurs in the context of the WebKit process, which may lead to full compromise of the application or system depending on sandbox restrictions. The impact is high, as it can lead to complete control of the affected software.

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 the latest versions of iOS and iTunes. No workarounds are available. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog.