Multiple cross-site request forgery (CSRF) vulnerabilities in Ubiquiti Networks UniFi Controller before 3.2.1 allow remote attackers to hijack the authentication of administrators for requests that (1) create a new admin user via a request to api/add/admin; (2) have unspecified impact via a request to api/add/wlanconf; change the guest (3) password, (4) authentication method, or (5) restricted subnets via a request to api/set/setting/guest_access; (6) block, (7) unblock, or (8) reconnect users by MAC address via a request to api/cmd/stamgr; change the syslog (9) server or (10) port via a request to api/set/setting/rsyslogd; (11) have unspecified impact via a request to api/set/setting/smtp; change the syslog (12) server, (13) port, or (14) authentication settings via a request to api/cmd/cfgmgr; or (15) change the Unifi Controller name via a request to api/set/setting/identity.

SMTP MITM refers to a malicious actor setting up an SMTP proxy server between the UniFi Controller version <= 5.10.21 and their actual SMTP server to record their SMTP credentials for malicious use later.

Ubiquiti UniFi Controller before 3.2.1 logs the administrative password hash in syslog messages, which allows man-in-the-middle attackers to obtain sensitive information via unspecified vectors.