CVE-2015-7038

Vulnerability

A buffer overflow vulnerability exists in the libc library of Apple operating systems. This flaw affects iOS versions prior to 9.2, OS X versions prior to 10.11.2, tvOS versions prior to 9.1, and watchOS versions prior to 2.1 [1][2][3][4]. The vulnerability is triggered when processing a specially crafted package, leading to memory corruption.

Exploitation

An attacker can exploit this vulnerability remotely by delivering a malicious package to the target device. No authentication is required, and the attacker does not need prior access to the system. The crafted package causes a buffer overflow in libc, which can be leveraged to execute arbitrary code.

Impact

Successful exploitation allows an attacker to execute arbitrary code on the affected device. This can lead to full compromise of the system, including unauthorized access to data, installation of malware, or further propagation within a network. The impact is severe due to the remote, unauthenticated nature of the attack.

Mitigation

Apple addressed this vulnerability in the following updates: iOS 9.2, OS X El Capitan 10.11.2, tvOS 9.1, and watchOS 2.1 [1][2][3][4]. Users should update their devices to these or later versions. No workarounds are available; applying the security updates is the only mitigation.