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RHEL 6 : dovecot (RHSA-2011:0600)

medium Nessus Plugin ID 54597

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Synopsis

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

Description

Updated dovecot packages that fix two security issues and add one enhancement are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Dovecot is an IMAP server for Linux, UNIX, and similar operating systems, primarily written with security in mind.

A flaw was found in the way Dovecot handled SIGCHLD signals. If a large amount of IMAP or POP3 session disconnects caused the Dovecot master process to receive these signals rapidly, it could cause the master process to crash. (CVE-2010-3780)

A flaw was found in the way Dovecot processed multiple Access Control Lists (ACL) defined for a mailbox. In some cases, Dovecot could fail to apply the more specific ACL entry, possibly resulting in more access being granted to the user than intended. (CVE-2010-3707)

This update also adds the following enhancement :

* This erratum upgrades Dovecot to upstream version 2.0.9, providing multiple fixes for the 'dsync' utility and improving overall performance. Refer to the '/usr/share/doc/dovecot-2.0.9/ChangeLog' file after installing this update for further information about the changes. (BZ#637056)

Users of dovecot are advised to upgrade to these updated packages, which resolve these issues and add this enhancement. After installing the updated packages, the dovecot service will be restarted automatically.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2010-3707

https://access.redhat.com/security/cve/cve-2010-3780

https://access.redhat.com/errata/RHSA-2011:0600

Plugin Details

Severity: Medium

ID: 54597

File Name: redhat-RHSA-2011-0600.nasl

Version: 1.15

Type: local

Agent: unix

Published: 5/20/2011

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:dovecot-mysql, p-cpe:/a:redhat:enterprise_linux:dovecot-pgsql, p-cpe:/a:redhat:enterprise_linux:dovecot-pigeonhole, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:dovecot, p-cpe:/a:redhat:enterprise_linux:dovecot-debuginfo, p-cpe:/a:redhat:enterprise_linux:dovecot-devel

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: 5/19/2011

Vulnerability Publication Date: 10/6/2010

Reference Information

CVE: CVE-2010-3707, CVE-2010-3780

BID: 43690

RHSA: 2011:0600