ASA-201905-6 generated external raw

[ASA-201905-6] dovecot: denial of service
Arch Linux Security Advisory ASA-201905-6 ========================================= Severity: Medium Date : 2019-05-06 CVE-ID : CVE-2019-11494 CVE-2019-11499 Package : dovecot Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-954 Summary ======= The package <a href="/package/dovecot">dovecot</a> before version 2.3.6-1 is vulnerable to denial of service. Resolution ========== Upgrade to 2.3.6-1. # pacman -Syu "dovecot>=2.3.6-1" The problems have been fixed upstream in version 2.3.6. Workaround ========== None. Description =========== - CVE-2019-11494 (denial of service) Submission-login crashes with signal 11 due to null pointer access when authentication is aborted by disconnecting. This can lead to denial-of service attack by persistent attacker(s). - CVE-2019-11499 (denial of service) Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent. This can lead to denial-of-service attack by persistent attacker(s). Impact ====== A remote attacker is able to cause a denial of service by sending invalid authentication messages or aborting the authentication process. References ========== https://dovecot.org/doc/NEWS-2.3 https://www.mail-archive.com/fulldisclosure@seclists.org/msg06126.html https://dovecot.org/pipermail/dovecot/2019-April/115757.html https://dovecot.org/pipermail/dovecot/2019-April/115758.html https://security.archlinux.org/CVE-2019-11494 https://security.archlinux.org/CVE-2019-11499