Wazuh Server Deserialization of Untrusted Data Vulnerability

A remote attacker, with a low-privilege account, can achieve partial data exposure, arbitrary modification of data, complete denial of service or system unavailability. Federal agencies are required to remediate by 2025-07-01 under CISA BOD 22-01.

This is a Deserialization of Untrusted Data (CWE-502) vulnerability in Wazuh Wazuh Server. Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0 and prior to version 4.9.1, an unsafe deserialization vulnerability allows for remote code execution on Wazuh servers. DistributedAPI parameters are a serialized as JSON and deserialized using `as_wazuh_object` (in `framework/wazuh/core/cluster/common.py`). If an attacker manages to inject an unsanitized dictionary in DAPI request/response, they can forge an unhandled exception (`__unhandled_exc__`) to evaluate arbitrary python code. The vulnerability can be triggered by anybody with API access (compromised dashboard or Wazuh servers in the cluster) or, in certain configurations, even by a compromised agent. Version 4.9.1 contains a fix. Exploitation requires remote network access, low attack complexity, a low-privilege authenticated account, and no user interaction required.

Probably yes if any of these apply:

Active exploitation documented in the wild. Threat-research write-up: https://github.com/wazuh/wazuh/security/advisories/GHSA-hcrc-79hj-m3qh