Debian DLA-1333-1 : dovecot security update

high Nessus Plugin ID 108767


The remote Debian host is missing a security update.


Several vulnerabilities have been discovered in the Dovecot email server. The Common Vulnerabilities and Exposures project identifies the following issues :


Aleksandar Nikolic of Cisco Talos and 'flxflndy' discovered that Dovecot does not properly parse invalid email addresses, which may cause a crash or leak memory contents to an attacker.


It was discovered that TLS SNI config lookups may lead to excessive memory usage, causing imap-login/pop3-login VSZ limit to be reached and the process restarted, resulting in a denial of service. Only Dovecot configurations containing local_name { } or local { } configuration blocks are affected.


It was discovered that Dovecot contains a memory leak flaw in the login process on aborted SASL authentication.

For Debian 7 'Wheezy', these problems have been fixed in version 1:2.1.7-7+deb7u2.

We recommend that you upgrade your dovecot packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: High

ID: 108767

File Name: debian_DLA-1333.nasl

Version: 1.5

Type: local

Agent: unix

Published: 4/2/2018

Updated: 1/11/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 4.2


Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:P


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:dovecot-managesieved, p-cpe:/a:debian:debian_linux:dovecot-mysql, p-cpe:/a:debian:debian_linux:dovecot-pgsql, p-cpe:/a:debian:debian_linux:dovecot-pop3d, p-cpe:/a:debian:debian_linux:dovecot-sieve, p-cpe:/a:debian:debian_linux:dovecot-solr, p-cpe:/a:debian:debian_linux:dovecot-sqlite, cpe:/o:debian:debian_linux:7.0, p-cpe:/a:debian:debian_linux:dovecot-common, p-cpe:/a:debian:debian_linux:dovecot-core, p-cpe:/a:debian:debian_linux:dovecot-dbg, p-cpe:/a:debian:debian_linux:dovecot-dev, p-cpe:/a:debian:debian_linux:dovecot-gssapi, p-cpe:/a:debian:debian_linux:dovecot-imapd, p-cpe:/a:debian:debian_linux:dovecot-ldap, p-cpe:/a:debian:debian_linux:dovecot-lmtpd

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 3/31/2018

Reference Information

CVE: CVE-2017-14461, CVE-2017-15130, CVE-2017-15132