Zammad.API.Form.Controller.Insecure.Deserialization

Description

This indicates an attack attempt to exploit an Insecure Deserialization Vulnerability in Zammad.
This vulnerability is due to Java serialization issues when processing requests. A remote unauthenticated attacker can exploit this vulnerability by sending a crafted request. Successful exploitation would result in arbitrary code execution with SYSTEM privileges.

Affected Products

Zammad version 4.1.0 and prior

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://zammad.com/en/advisories/zaa-2021-14

References