RHEL 8 : dovecot (RHSA-2021:1887)

medium Nessus Plugin ID 149667

Synopsis

The remote Red Hat host is missing one or more security updates for dovecot.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1887 advisory.

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: IMAP hibernation function allows mail access (CVE-2020-24386)

* dovecot: Denial of service via mail MIME parsing (CVE-2020-25275)

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 8.4 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL dovecot package based on the guidance in RHSA-2021:1887.

See Also

http://www.nessus.org/u?74d23471

http://www.nessus.org/u?862005a9

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/errata/RHSA-2021:1887

https://bugzilla.redhat.com/show_bug.cgi?id=1805947

https://bugzilla.redhat.com/show_bug.cgi?id=1888111

https://bugzilla.redhat.com/show_bug.cgi?id=1894418

https://bugzilla.redhat.com/show_bug.cgi?id=1912455

https://bugzilla.redhat.com/show_bug.cgi?id=1912460

Plugin Details

Severity: Medium

ID: 149667

File Name: redhat-RHSA-2021-1887.nasl

Version: 1.10

Type: local

Agent: unix

Published: 5/19/2021

Updated: 11/7/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2020-24386

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:dovecot-pgsql, p-cpe:/a:redhat:enterprise_linux:dovecot-mysql, p-cpe:/a:redhat:enterprise_linux:dovecot-pigeonhole, p-cpe:/a:redhat:enterprise_linux:dovecot, p-cpe:/a:redhat:enterprise_linux:dovecot-devel, cpe:/o:redhat:enterprise_linux:8

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 5/18/2021

Vulnerability Publication Date: 1/4/2021

Reference Information

CVE: CVE-2020-24386, CVE-2020-25275

CWE: 138, 20

RHSA: 2021:1887