Netatalk Predictable AFP Session Token Vulnerability Allowing Denial-of-Service

A vulnerability in Netatalk versions 2.0.0 through 4.4.2 allows for predictable AFP session tokens, which are derived from the process ID. This predictability can be exploited by an authenticated user to terminate processes on the host, leading to a denial-of-service condition.

Impact

Exploitation of this vulnerability can cause a denial-of-service by allowing an authenticated user to terminate processes on the host.

Remediation

Users can upgrade to Netatalk 4.4.3 or later, which includes the necessary patch. Alternatively, the patch can be applied to a Netatalk 4.4.2 source tree. Netatalk administrators are advised to upgrade or apply the patch as soon as possible.