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Date: Fri, 02 Mar 2018 22:28:08 +0000
From: Salvatore Bonaccorso <carnil@...ian.org>
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 4130-1] dovecot security update

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-4130-1                   security@...ian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
March 02, 2018                        https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : dovecot
CVE ID         : CVE-2017-14461 CVE-2017-15130 CVE-2017-15132
Debian Bug     : 888432 891819 891820

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 the oldstable distribution (jessie), these problems have been fixed
in version 1:2.2.13-12~deb8u4.

For the stable distribution (stretch), these problems have been fixed in
version 1:2.2.27-3+deb9u2.

We recommend that you upgrade your dovecot packages.

For the detailed security status of dovecot please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/dovecot

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

Mailing list: debian-security-announce@...ts.debian.org
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