Detections
Analytics
CentOS 6 : dovecot (CESA-2013:0520)
medium Nessus Plugin ID 65151
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Synopsis
The remote CentOS host is missing one or more security updates.Description
Updated dovecot packages that fix three security issues and one bug are now available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having low 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, written with security primarily in mind, for Linux and other UNIX-like systems. It also contains a small POP3 server. It supports mail in either of maildir or mbox formats. The SQL drivers and authentication plug-ins are provided as sub-packages.
Two flaws were found in the way some settings were enforced by the script-login functionality of Dovecot. A remote, authenticated user could use these flaws to bypass intended access restrictions or conduct a directory traversal attack by leveraging login scripts.
(CVE-2011-2166, CVE-2011-2167)
A flaw was found in the way Dovecot performed remote server identity verification, when it was configured to proxy IMAP and POP3 connections to remote hosts using TLS/SSL protocols. A remote attacker could use this flaw to conduct man-in-the-middle attacks using an X.509 certificate issued by a trusted Certificate Authority (for a different name). (CVE-2011-4318)
This update also fixes the following bug :
* When a new user first accessed their IMAP inbox, Dovecot was, under some circumstances, unable to change the group ownership of the inbox directory in the user's Maildir location to match that of the user's mail spool (/var/mail/$USER). This correctly generated an 'Internal error occurred' message. However, with a subsequent attempt to access the inbox, Dovecot saw that the directory already existed and proceeded with its operation, leaving the directory with incorrectly set permissions. This update corrects the underlying permissions setting error. When a new user now accesses their inbox for the first time, and it is not possible to set group ownership, Dovecot removes the created directory and generates an error message instead of keeping the directory with incorrect group ownership. (BZ#697620)
Users of dovecot are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the dovecot service will be restarted automatically.
Solution
Update the affected dovecot packages.See Also
Plugin Details
Severity: Medium
ID: 65151
File Name: centos_RHSA-2013-0520.nasl
Version: 1.10
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 3/10/2013
Updated: 1/4/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 4.8
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS Score Source: CVE-2011-2166
Vulnerability Information
CPE: p-cpe:/a:centos:centos:dovecot-pgsql, p-cpe:/a:centos:centos:dovecot, cpe:/o:centos:centos:6, p-cpe:/a:centos:centos:dovecot-mysql, p-cpe:/a:centos:centos:dovecot-devel, p-cpe:/a:centos:centos:dovecot-pigeonhole
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 3/8/2013
Vulnerability Publication Date: 5/24/2011
Reference Information
CVE: CVE-2011-2166, CVE-2011-2167, CVE-2011-4318
RHSA: 2013:0520