Checkmk werks security October 2021

checkmk-werks-sec@lists.checkmk.com

2 participants
3 discussions

Checkmk Werk 13332: Password store for LDAP service and SMTP service access

by Tom Baerwinkel

ID: 13332 Title: Password store for LDAP service and SMTP service access Component: Multisite Level: 1 Class: Security fix Version: 2.1.0i1 The rules "Check LDAP service access" and "Check SMTP service access" now support the password store.

2 years, 6 months

Checkmk Werk 13330: Don't show clear text passwords in the audit log

by Tom Baerwinkel

ID: 13330 Title: Don't show clear text passwords in the audit log Component: Multisite Level: 2 Class: Security fix Version: 2.1.0i1 Beginning from version 2.0 passwords were written to the audit log in clear text when a rule with a password field was created/cloned or when a password in a rule was modified. This werk fixes that so that no passwords are written to the audit log anymore. By default only admin users are able to see the audit log. Guests and normal monitoring users do not have acces to the audit log. If a rule uses the password store, no passwords were written to the audit log. Existing passwords in the audit log should be replaced automatically by "hash:XXXXXXXXXX" during the update. But please double check that no passwords remain in the log (see next paragraph for details). If you e.g. use rulesets from extension packages that contain password fields, passwords from these rules may remain in the log. Additionally, rules from the rulesets "Check SFTP Service", "Microsoft SQL Server (Windows)" and "Redis databases" cannot be replaced reliably. So these passwords will remail in the audit log even after the update. You can remove/replace remaining passwords directly in the log files. The log files are placed in the directory var/check_mk/wato/log. The names of the files are wato_audit.log for the most recent file and wato_audit.log.YYYY-MM-DD for historic files. Note that if you use the action "Clear audit log" in the GUI the log is not deleted, but moved from wato_audit.log to wato_audit.log.YYYY-MM-DD. So in this case the passwords will not be visible in the GUI anymore, but remain in the historic log files of the site. The historic files are only accessible by the site user and group from the command line. In distributed setups which do not replicate the configuration passwords are replaced during the update of each site. In setups which replicate the configuration from central to remote sites no passwords should be present in the logs of the remote site, since only information about the activation is logged. Only if you switched to a replicated setup after the upgrade to the 2.0, passwords can be present in the logs. Since passwords may be in this scenario as well, the steps described before also apply.

2 years, 7 months

Checkmk Werk 13307: Update site openssl to 1.1.1l

by Lars Michelsen

ID: 13307 Title: Update site openssl to 1.1.1l Component: Other Components Level: 1 Class: Security fix Version: 2.1.0i1

2 years, 7 months

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Checkmk werks security October 2021