[RHSA-2019:2836-01] Important: dovecot security update

Fri Sep 20 09:25:11 UTC 2019

An update for dovecot is now available for Red Hat Enterprise Linux 7.

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. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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. 7):

Source:
dovecot-2.2.36-3.el7_7.1.src.rpm

ppc64:
dovecot-2.2.36-3.el7_7.1.ppc.rpm
dovecot-2.2.36-3.el7_7.1.ppc64.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.ppc.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.ppc64.rpm
dovecot-mysql-2.2.36-3.el7_7.1.ppc64.rpm
dovecot-pgsql-2.2.36-3.el7_7.1.ppc64.rpm
dovecot-pigeonhole-2.2.36-3.el7_7.1.ppc64.rpm

ppc64le:
dovecot-2.2.36-3.el7_7.1.ppc64le.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.ppc64le.rpm
dovecot-mysql-2.2.36-3.el7_7.1.ppc64le.rpm
dovecot-pgsql-2.2.36-3.el7_7.1.ppc64le.rpm
dovecot-pigeonhole-2.2.36-3.el7_7.1.ppc64le.rpm

s390x:
dovecot-2.2.36-3.el7_7.1.s390.rpm
dovecot-2.2.36-3.el7_7.1.s390x.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.s390.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.s390x.rpm
dovecot-mysql-2.2.36-3.el7_7.1.s390x.rpm
dovecot-pgsql-2.2.36-3.el7_7.1.s390x.rpm
dovecot-pigeonhole-2.2.36-3.el7_7.1.s390x.rpm

x86_64:
dovecot-2.2.36-3.el7_7.1.i686.rpm
dovecot-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.i686.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-mysql-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-pgsql-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-pigeonhole-2.2.36-3.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
dovecot-debuginfo-2.2.36-3.el7_7.1.ppc64.rpm
dovecot-devel-2.2.36-3.el7_7.1.ppc64.rpm

ppc64le:
dovecot-debuginfo-2.2.36-3.el7_7.1.ppc64le.rpm
dovecot-devel-2.2.36-3.el7_7.1.ppc64le.rpm

s390x:
dovecot-debuginfo-2.2.36-3.el7_7.1.s390x.rpm
dovecot-devel-2.2.36-3.el7_7.1.s390x.rpm

x86_64:
dovecot-debuginfo-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-devel-2.2.36-3.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
dovecot-2.2.36-3.el7_7.1.src.rpm

x86_64:
dovecot-2.2.36-3.el7_7.1.i686.rpm
dovecot-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.i686.rpm
dovecot-debuginfo-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-mysql-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-pgsql-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-pigeonhole-2.2.36-3.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
dovecot-debuginfo-2.2.36-3.el7_7.1.x86_64.rpm
dovecot-devel-2.2.36-3.el7_7.1.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 at redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=la7z
-----END PGP SIGNATURE-----