CVE-2018-4295

Vulnerability

An input validation issue exists in the Apple Filing Protocol (AFP) server, specifically in the afpserver component, on macOS Sierra 10.12.6, macOS High Sierra 10.13.6, and versions prior to macOS Mojave 10.14. The vulnerability allows a remote attacker to potentially attack AFP servers through HTTP clients [1].

Exploitation

A remote attacker with network access to an affected system could send crafted HTTP requests to the AFP server. No authentication is explicitly required, but the attacker must be in a position to interact with the AFP service. The attack vector is network-based, and the attacker exploits the improper input validation in the AFP server's handling of HTTP client requests [1].

Impact

Successful exploitation could allow the attacker to compromise the AFP server, potentially leading to unauthorized access or disruption of the AFP service. The confidentiality, integrity, and availability of the system may be affected [1].

Mitigation

Apple addressed this issue in macOS Mojave 10.14, released on September 24, 2018 [2]. For systems running macOS Sierra 10.12.6 or macOS High Sierra 10.13.6, the update was included in Security Update 2018-005 Sierra and Security Update 2018-002 High Sierra, released on October 30, 2018 [1]. Users should update to the latest available versions to mitigate the vulnerability.