FreeBSD : dovecot -- Dovecot DoS when passdb dict was used for authentication (a8c8001b-216c-11e7-80aa-005056925db4)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

Timo Sirainen reports :

passdb/userdb dict: Don't double-expand %variables in keys. If dict
was used as the authentication passdb, using specially crafted
%variables in the username could be used to cause DoS.

See also :

https://dovecot.org/list/dovecot-news/2017-April/000341.html
https://dovecot.org/list/dovecot-news/2017-April/000342.html
http://www.nessus.org/u?cf390d81

Solution :

Update the affected packages.

Risk factor :

High

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 99750 ()

Bugtraq ID:

CVE ID: CVE-2017-2669

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