Linux Security
Linux Security
Linux Security

Debian: DSA-4130-1: dovecot security update

Date 02 Mar 2018
6050
Posted By Anthony Pell
Several vulnerabilities have been discovered in the Dovecot email server. The Common Vulnerabilities and Exposures project identifies the following issues:

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4130-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
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: This email address is being protected from spambots. You need JavaScript enabled to view it.

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