CentOS Update for dovecot CESA-2013:0520 centos6

Published: 2013-03-12 04:32:15
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:S/C:P/I:P/A:P

Summary:
The remote host is missing an update for the 'dovecot' Linux Distribution Package(s) announced via the referenced advisory.

Affected Versions:
dovecot on CentOS 6

Recommendations:
Please install the updated Linux Distribution Packages.

Technical Details:
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-Linux Distribution 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 Linux Distribution Packages, which contain backported patches to correct these issues. After installing the updated Linux Distribution Packages, the dovecot service will be restarted automatically.

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2011-2166
https://nvd.nist.gov/vuln/detail/CVE-2011-2167
https://nvd.nist.gov/vuln/detail/CVE-2011-4318

References:

http://lists.centos.org/pipermail/centos-announce/2013-March/019318.html

Severity
Medium
CVSS Score
6.5
Published
2013-03-12
Modified
2019-03-15
Category
CentOS Local Security Checks

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