[RHSA-2020:1062-01] Moderate: dovecot security and bug fix update

Tue Mar 31 19:40:41 UTC 2020

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 Moderate. 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 certificate validation (CVE-2019-3814)

* dovecot: Buffer overflow in indexer-worker process results in privilege
escalation (CVE-2019-7524)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.8 Release Notes linked from 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/):

1570283 - Dovecot should use portrelease to avoid port conflicts with NFSv4 mounts
1673415 - CVE-2019-3814 dovecot: Improper certificate validation
1696152 - CVE-2019-7524 dovecot: Buffer overflow in indexer-worker process results in privilege escalation

6. Package List:

Red Hat Enterprise Linux Server (v. 7):

Source:
dovecot-2.2.36-6.el7.src.rpm

ppc64:
dovecot-2.2.36-6.el7.ppc.rpm
dovecot-2.2.36-6.el7.ppc64.rpm
dovecot-debuginfo-2.2.36-6.el7.ppc.rpm
dovecot-debuginfo-2.2.36-6.el7.ppc64.rpm
dovecot-mysql-2.2.36-6.el7.ppc64.rpm
dovecot-pgsql-2.2.36-6.el7.ppc64.rpm
dovecot-pigeonhole-2.2.36-6.el7.ppc64.rpm

ppc64le:
dovecot-2.2.36-6.el7.ppc64le.rpm
dovecot-debuginfo-2.2.36-6.el7.ppc64le.rpm
dovecot-mysql-2.2.36-6.el7.ppc64le.rpm
dovecot-pgsql-2.2.36-6.el7.ppc64le.rpm
dovecot-pigeonhole-2.2.36-6.el7.ppc64le.rpm

s390x:
dovecot-2.2.36-6.el7.s390.rpm
dovecot-2.2.36-6.el7.s390x.rpm
dovecot-debuginfo-2.2.36-6.el7.s390.rpm
dovecot-debuginfo-2.2.36-6.el7.s390x.rpm
dovecot-mysql-2.2.36-6.el7.s390x.rpm
dovecot-pgsql-2.2.36-6.el7.s390x.rpm
dovecot-pigeonhole-2.2.36-6.el7.s390x.rpm

x86_64:
dovecot-2.2.36-6.el7.i686.rpm
dovecot-2.2.36-6.el7.x86_64.rpm
dovecot-debuginfo-2.2.36-6.el7.i686.rpm
dovecot-debuginfo-2.2.36-6.el7.x86_64.rpm
dovecot-mysql-2.2.36-6.el7.x86_64.rpm
dovecot-pgsql-2.2.36-6.el7.x86_64.rpm
dovecot-pigeonhole-2.2.36-6.el7.x86_64.rpm

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

ppc64:
dovecot-debuginfo-2.2.36-6.el7.ppc64.rpm
dovecot-devel-2.2.36-6.el7.ppc64.rpm

ppc64le:
dovecot-debuginfo-2.2.36-6.el7.ppc64le.rpm
dovecot-devel-2.2.36-6.el7.ppc64le.rpm

s390x:
dovecot-debuginfo-2.2.36-6.el7.s390x.rpm
dovecot-devel-2.2.36-6.el7.s390x.rpm

x86_64:
dovecot-debuginfo-2.2.36-6.el7.x86_64.rpm
dovecot-devel-2.2.36-6.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
dovecot-2.2.36-6.el7.src.rpm

x86_64:
dovecot-2.2.36-6.el7.i686.rpm
dovecot-2.2.36-6.el7.x86_64.rpm
dovecot-debuginfo-2.2.36-6.el7.i686.rpm
dovecot-debuginfo-2.2.36-6.el7.x86_64.rpm
dovecot-mysql-2.2.36-6.el7.x86_64.rpm
dovecot-pgsql-2.2.36-6.el7.x86_64.rpm
dovecot-pigeonhole-2.2.36-6.el7.x86_64.rpm

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

x86_64:
dovecot-debuginfo-2.2.36-6.el7.x86_64.rpm
dovecot-devel-2.2.36-6.el7.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-2019-3814
https://access.redhat.com/security/cve/CVE-2019-7524
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.8_release_notes/index

8. Contact:

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

Copyright 2020 Red Hat, Inc.
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