Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext
Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when requesting sensitive credentials from peer nodes over an unencrypted channel even when SSL/TLS is enabled in the product configuration. As a result, an attacker positioned on the network path can intercept credentials in transit. Captured credentials could allow the attacker to authenticate as a cluster node or service account, enabling further unauthorized access, lateral movement, or system compromise.
Nagios addresses this vulnerability as "There was an issue in Nagios Log Server where requests for credentials from a cluster manager would not use SSL, even if SSL was enabled" and "Fixed issue with requesting credentials from a cluster manager wouldn’t use SSL if enabled."