SUSE: 2021:2890-2 Moderate: Postfix15 Security Vulnerabilities

This update for dovecot23 fixes the following issues: Update dovecot to version 2.3.15 (jsc#SLE-19970): Security issues fixed: - CVE-2021-29157: Dovecot does not correctly escape kid and azp fields in JWT tokens. This may be used to supply attacker controlled keys to validate tokens, if attacker has local access. (bsc#1187418) Local attacker can login as any user and access their emails - CVE-2021-33515: On-path attacker could have injected plaintext commands before STARTTLS negotiation that would be executed after STARTTLS finished with the client. (bsc#1187419) Attacker can potentially steal user credentials and mails * Disconnection log messages are now more standardized across services. They also always now start with "Disconnected" prefix. * Dovecot now depends on libsystemd for systemd integration.