Insufficiently protected credentials in the host and folder configuration endpoints of the REST API in Checkmk <2.5.0p15, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an authenticated user who may view a host's configuration to read stored SNMP community strings, SNMPv3 auth and privacy pass phrases and IPMI passwords in clear text from GET responses, although the setup GUI never displays these values.
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