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This is a bugfix and security release. CVE-2018-12551: If Mosquitto is configured to use a password file for authentication, any malformed data in the password file will be treated as valid. This typically means that the malformed data becomes a username and no password. If this occurs, clients can circumvent authentication and get access to the broker by using the malformed username. In particular, a blank line will be treated as a valid empty username. Other security measures are unaffected. => Users who have only used the mosquitto_passwd utility to create and modify their password files are unaffected by this vulnerability. CVE-2018-12550: If an ACL file is empty, or has only blank lines or comments, then mosquitto treats the ACL file as not being defined, which means that no topic access is denied. Although denying access to all topics is not a useful configuration, this behaviour is unexpected and could lead to access being incorrectly granted in some circumstances. CVE-2018-12546. If a client publishes a retained message to a topic that they have access to, and then their access to that topic is revoked, the retained message will still be delivered to future subscribers. This behaviour may be undesirable in some applications, so a configuration option `check_retain_source` has been introduced to enforce checking of the retained message source on publish. Plus the following bugfixes: * wills not sent to websocket clients * spaces now allowed in bridge usernames * durable clients not receiving offline messages with per_listener_settings==true * compilation with openssl without deprecated apis * TLS working over SOCKS * better comment handling in config files Full changelog available at: https://github.com/eclipse/mosquitto/blob/fixes/ChangeLog.txt#L1 Signed-off-by: Karl Palsson <karlp@etactica.com>lilik-openwrt-22.03
Karl Palsson
5 years ago