Wazuh Log Collector Integer Underflow Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Wazuh. Log Injection is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of the multilines log format. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.