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Red Hat Enterprise Linux 8 RHSA-2020-4763-01 Moderate Dovecot Update

red hat
Calendar Grey November 3, 2020
Dist Redhat Esm H88
Minor: New Dovecot patch released for Red Hat Enterprise Linux 8. It addresses vulnerabilities including potential service interruptions and more.
An update for dovecot is now available for Red Hat Enterprise Linux 8

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

Summary

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: command followed by sufficient number of newlines leads to use-after-free (CVE-2020-10958)
* dovecot: sending mail with empty quoted localpart leads to DoS (CVE-2020-10967)
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 8.3 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service red hat mail server dovecot

References

https://access.redhat.com/security/cve/CVE-2020-10958 https://access.redhat.com/security/cve/CVE-2020-10967 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: dovecot-2.3.8-4.el8.src.rpm
aarch64: dovecot-2.3.8-4.el8.aarch64.rpm dovecot-debuginfo-2.3.8-4.el8.aarch64.rpm dovecot-debugsource-2.3.8-4.el8.aarch64.rpm dovecot-mysql-2.3.8-4.el8.aarch64.rpm dovecot-mysql-debuginfo-2.3.8-4.el8.aarch64.rpm dovecot-pgsql-2.3.8-4.el8.aarch64.rpm dovecot-pgsql-debuginfo-2.3.8-4.el8.aarch64.rpm dovecot-pigeonhole-2.3.8-4.el8.aarch64.rpm dovecot-pigeonhole-debuginfo-2.3.8-4.el8.aarch64.rpm
ppc64le: dovecot-2.3.8-4.el8.ppc64le.rpm dovecot-debuginfo-2.3.8-4.el8.ppc64le.rpm dovecot-debugsource-2.3.8-4.el8.ppc64le.rpm dovecot-mysql-2.3.8-4.el8.ppc64le.rpm dovecot-mysql-debuginfo-2.3.8-4.el8.ppc64le.rpm dovecot-pgsql-2.3.8-4.el8.ppc64le.rpm dovecot-pgsql-debuginfo-2.3.8-4.el8.ppc64le.rpm dovecot-pigeonhole-2.3.8-4.el8.ppc64le.rpm dovecot-pigeonhole-debuginfo-2.3.8-4.el8.ppc64le.rpm
s390x: dovecot-2.3.8-4.el8.s390x.rpm dovecot-debuginfo-2.3.8-4.el8.s390x.rpm dovecot-debugsource-2.3.8-4.el8.s390x.rpm dovecot-mysql-2.3.8-4.el8.s390x.rpm dovecot-mysql-debuginfo-2.3.8-4.el8.s390x.rpm dovecot-pgsql-2.3.8-4.el8.s390x.rpm dovecot-pgsql-debuginfo-2.3.8-4.el8.s390x.rpm dovecot-pigeonhole-2.3.8-4.el8.s390x.rpm dovecot-pigeonhole-debuginfo-2.3.8-4.el8.s390x.rpm
x86_64: dovecot-2.3.8-4.el8.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:4763-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4763
Issue date: 2020-11-03

Topic

An update for dovecot is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service red hat mail server dovecot

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1834323 - CVE-2020-10958 dovecot: command followed by sufficient number of newlines leads to use-after-free

1834326 - CVE-2020-10967 dovecot: sending mail with empty quoted localpart leads to DoS

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