Debian Long Term Support / LTS Security Information / 2018 / Security Information -- DLA-1333-1 dovecot

Debian Security Advisory

DLA-1333-1 dovecot -- LTS security update

Date Reported:

31 Mar 2018

Affected Packages:

dovecot

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2017-14461, CVE-2017-15130, CVE-2017-15132.

More information:

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

• CVE-2017-14461

  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.

• CVE-2017-15130

  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.

• CVE-2017-15132

  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.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS