Detections
Analytics
RHEL 5 : dovecot (RHSA-2009:0205)
medium Nessus Plugin ID 35433
Synopsis
The remote Red Hat host is missing a security update.Description
An updated dovecot package that corrects two security flaws and various bugs is now available for Red Hat Enterprise Linux 5.This update has been rated as having low security impact by the Red Hat Security Response Team.
Dovecot is an IMAP server for Linux and UNIX-like systems, primarily written with security in mind.
A flaw was found in Dovecot's ACL plug-in. The ACL plug-in treated negative access rights as positive rights, which could allow an attacker to bypass intended access restrictions. (CVE-2008-4577)
A password disclosure flaw was found with Dovecot's configuration file. If a system had the 'ssl_key_password' option defined, any local user could view the SSL key password. (CVE-2008-4870)
Note: This flaw did not allow the attacker to acquire the contents of the SSL key. The password has no value without the key file which arbitrary users should not have read access to.
To better protect even this value, however, the dovecot.conf file now supports the '!include_try' directive. The ssl_key_password option should be moved from dovecot.conf to a new file owned by, and only readable and writable by, root (ie 0600). This file should be referenced from dovecot.conf by setting the '!include_try [/path/to/password/file]' option.
Additionally, this update addresses the following bugs :
* the dovecot init script -- /etc/rc.d/init.d/dovecot -- did not check if the dovecot binary or configuration files existed. It also used the wrong pid file for checking the dovecot service's status. This update includes a new init script that corrects these errors.
* the %files section of the dovecot spec file did not include '%dir %{ssldir}/private'. As a consequence, the /etc/pki/private/ directory was not owned by dovecot. (Note: files inside /etc/pki/private/ were and are owned by dovecot.) With this update, the missing line has been added to the spec file, and the noted directory is now owned by dovecot.
* in some previously released versions of dovecot, the authentication process accepted (and passed along un-escaped) passwords containing characters that had special meaning to dovecot's internal protocols.
This updated release prevents such passwords from being passed back, instead returning the error, 'Attempted login with password having illegal chars'.
Note: dovecot versions previously shipped with Red Hat Enterprise Linux 5 did not allow this behavior. This update addresses the issue above but said issue was only present in versions of dovecot not previously included with Red Hat Enterprise Linux 5.
Users of dovecot are advised to upgrade to this updated package, which addresses these vulnerabilities and resolves these issues.
Solution
Update the affected dovecot package.See Also
https://access.redhat.com/security/cve/cve-2008-4577
Plugin Details
Severity: Medium
ID: 35433
File Name: redhat-RHSA-2009-0205.nasl
Version: 1.24
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 1/21/2009
Updated: 1/14/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 6.4
Temporal Score: 4.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:dovecot
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: 1/20/2009
Vulnerability Publication Date: 10/15/2008
Reference Information
CVE: CVE-2008-4577, CVE-2008-4870
BID: 31587