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RedHat: RHSA-2020-3617 Important: Dovecot Security Issues

red hat
Calendar Grey September 3, 2020
Dist Redhat Esm H88
Ubuntu has issued a crucial Postfix patch focusing on security, resolving concerns such as memory leaks and server failures.
An update for dovecot is now available for Red Hat Enterprise Linux 7

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: Resource exhaustion via deeply nested MIME parts (CVE-2020-12100)
* dovecot: Out of bound reads in dovecot NTLM implementation (CVE-2020-12673)
* dovecot: Crash due to assert in RPA implementation (CVE-2020-12674)
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.

Topics%20covered

Topics Covered

security advisory Red Hat dovecot crash issue resource exhaustion important security update out of bounds read

References

https://access.redhat.com/security/cve/CVE-2020-12100 https://access.redhat.com/security/cve/CVE-2020-12673 https://access.redhat.com/security/cve/CVE-2020-12674 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: dovecot-2.2.36-6.el7_8.1.src.rpm
ppc64: dovecot-2.2.36-6.el7_8.1.ppc.rpm dovecot-2.2.36-6.el7_8.1.ppc64.rpm dovecot-debuginfo-2.2.36-6.el7_8.1.ppc.rpm dovecot-debuginfo-2.2.36-6.el7_8.1.ppc64.rpm dovecot-mysql-2.2.36-6.el7_8.1.ppc64.rpm dovecot-pgsql-2.2.36-6.el7_8.1.ppc64.rpm dovecot-pigeonhole-2.2.36-6.el7_8.1.ppc64.rpm
ppc64le: dovecot-2.2.36-6.el7_8.1.ppc64le.rpm dovecot-debuginfo-2.2.36-6.el7_8.1.ppc64le.rpm dovecot-mysql-2.2.36-6.el7_8.1.ppc64le.rpm dovecot-pgsql-2.2.36-6.el7_8.1.ppc64le.rpm dovecot-pigeonhole-2.2.36-6.el7_8.1.ppc64le.rpm
s390x: dovecot-2.2.36-6.el7_8.1.s390.rpm dovecot-2.2.36-6.el7_8.1.s390x.rpm dovecot-debuginfo-2.2.36-6.el7_8.1.s390.rpm dovecot-debuginfo-2.2.36-6.el7_8.1.s390x.rpm dovecot-mysql-2.2.36-6.el7_8.1.s390x.rpm dovecot-pgsql-2.2.36-6.el7_8.1.s390x.rpm dovecot-pigeonhole-2.2.36-6.el7_8.1.s390x.rpm
x86_64: dovecot-2.2.36-6.el7_8.1.i686.rpm dovecot-2.2.36-6.el7_8.1.x86_64.rpm dovecot-debuginfo-2.2.36-6.el7_8.1.i686.rpm dovecot-debuginfo-2.2.36-6.el7_8.1.x86_64.rpm dovecot-mysql-2.2.36-6.el7_8.1.x86_64.rpm dovecot-pgsql-2.2.36-6.el7_8.1.x86_64.rpm dovecot-pigeonhole-2.2.36-6.el7_8.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:3617-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3617
Issue date: 2020-09-03

Topic

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat dovecot crash issue resource exhaustion important security update out of bounds read

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

Bugs Fixed

1866309 - CVE-2020-12100 dovecot: Resource exhaustion via deeply nested MIME parts

1866313 - CVE-2020-12673 dovecot: Out of bound reads in dovecot NTLM implementation

1866317 - CVE-2020-12674 dovecot: Crash due to assert in RPA implementation

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