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Red Hat Security Advisory 2019-2885-01

Red Hat Security Advisory 2019-2885-01
Posted Sep 24, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2885-01 - Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Issues addressed include an out of bounds write vulnerability.

tags | advisory, imap
systems | linux, redhat, unix
advisories | CVE-2019-11500
SHA-256 | 9fd2c275018a733cb0c3bfff40805dbf55029a0ac78e0633b48964b677b6156c

Red Hat Security Advisory 2019-2885-01

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=====================================================================
Red Hat Security Advisory

Synopsis: Important: dovecot security update
Advisory ID: RHSA-2019:2885-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2885
Issue date: 2019-09-23
CVE Names: CVE-2019-11500
=====================================================================

1. Summary:

An update for dovecot is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

Dovecot is an IMAP server for Linux and other UNIX-like systems, written
primarily with security in mind. It also contains a small POP3 server, and
supports e-mail in either the maildir or mbox format. The SQL drivers and
authentication plug-ins are provided as subpackages.

Security Fix(es):

* dovecot: improper NULL byte handling in IMAP and ManageSieve protocol
parsers leads to out of bounds writes (CVE-2019-11500)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1741141 - CVE-2019-11500 dovecot: improper NULL byte handling in IMAP and ManageSieve protocol parsers leads to out of bounds writes

6. Package List:

Red Hat Enterprise Linux Server (v. 6):

Source:
dovecot-2.0.9-22.el6_10.1.src.rpm

i386:
dovecot-2.0.9-22.el6_10.1.i686.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.i686.rpm
dovecot-mysql-2.0.9-22.el6_10.1.i686.rpm
dovecot-pgsql-2.0.9-22.el6_10.1.i686.rpm
dovecot-pigeonhole-2.0.9-22.el6_10.1.i686.rpm

ppc64:
dovecot-2.0.9-22.el6_10.1.ppc.rpm
dovecot-2.0.9-22.el6_10.1.ppc64.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.ppc.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.ppc64.rpm
dovecot-mysql-2.0.9-22.el6_10.1.ppc64.rpm
dovecot-pgsql-2.0.9-22.el6_10.1.ppc64.rpm
dovecot-pigeonhole-2.0.9-22.el6_10.1.ppc64.rpm

s390x:
dovecot-2.0.9-22.el6_10.1.s390.rpm
dovecot-2.0.9-22.el6_10.1.s390x.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.s390.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.s390x.rpm
dovecot-mysql-2.0.9-22.el6_10.1.s390x.rpm
dovecot-pgsql-2.0.9-22.el6_10.1.s390x.rpm
dovecot-pigeonhole-2.0.9-22.el6_10.1.s390x.rpm

x86_64:
dovecot-2.0.9-22.el6_10.1.i686.rpm
dovecot-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.i686.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-mysql-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-pgsql-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-pigeonhole-2.0.9-22.el6_10.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

i386:
dovecot-debuginfo-2.0.9-22.el6_10.1.i686.rpm
dovecot-devel-2.0.9-22.el6_10.1.i686.rpm

ppc64:
dovecot-debuginfo-2.0.9-22.el6_10.1.ppc64.rpm
dovecot-devel-2.0.9-22.el6_10.1.ppc64.rpm

s390x:
dovecot-debuginfo-2.0.9-22.el6_10.1.s390x.rpm
dovecot-devel-2.0.9-22.el6_10.1.s390x.rpm

x86_64:
dovecot-debuginfo-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-devel-2.0.9-22.el6_10.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
dovecot-2.0.9-22.el6_10.1.src.rpm

i386:
dovecot-2.0.9-22.el6_10.1.i686.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.i686.rpm
dovecot-mysql-2.0.9-22.el6_10.1.i686.rpm
dovecot-pgsql-2.0.9-22.el6_10.1.i686.rpm
dovecot-pigeonhole-2.0.9-22.el6_10.1.i686.rpm

x86_64:
dovecot-2.0.9-22.el6_10.1.i686.rpm
dovecot-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.i686.rpm
dovecot-debuginfo-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-mysql-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-pgsql-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-pigeonhole-2.0.9-22.el6_10.1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

i386:
dovecot-debuginfo-2.0.9-22.el6_10.1.i686.rpm
dovecot-devel-2.0.9-22.el6_10.1.i686.rpm

x86_64:
dovecot-debuginfo-2.0.9-22.el6_10.1.x86_64.rpm
dovecot-devel-2.0.9-22.el6_10.1.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2019-11500
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
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