Executive Summary

Informations
Name MDVSA-2008:232 First vendor Publication 2008-11-19
Vendor Mandriva Last vendor Modification 2008-11-19
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

The ACL plugin in dovecot prior to version 1.1.4 treated negative access rights as though they were positive access rights, which allowed attackers to bypass intended access restrictions (CVE-2008-4577).

The ACL plugin in dovecot prior to version 1.1.6 allowed attackers to bypass intended access restrictions by using the 'k' right to create unauthorized 'parent/child/child' mailboxes (CVE-2008-4578).

In addition, two bugs were discovered in the dovecot package shipped with Mandriva Linux 2009.0. The default permissions on the dovecot.conf configuration file were too restrictive, which prevents the use of dovecot's 'deliver' command as a non-root user. Secondly, dovecot should not start until after ntpd, if ntpd is active, because if ntpd corrects the time backwards while dovecot is running, dovecot will quit automatically, with the log message 'Time just moved backwards by X seconds. This might cause a lot of problems, so I'll just kill myself now.' The update resolves both these problems. The default permissions on dovecot.conf now allow the 'deliver' command to read the file. Note that if you edited dovecot.conf at all prior to installing the update, the new permissions may not be applied. If you find the 'deliver' command still does not work following the update, please run these commands as root:

# chmod 0640 /etc/dovecot.conf # chown root:mail /etc/dovecot.conf

Dovecot's initialization script now configures it to start after the ntpd service, to ensure ntpd resetting the clock does not interfere with Dovecot operation.

This package corrects the above-noted bugs and security issues by upgrading to the latest dovecot 1.1.6, which also provides additional bug fixes.

Original Source

Url : http://www.mandriva.com/security/advisories?name=MDVSA-2008:232

CAPEC : Common Attack Pattern Enumeration & Classification

Id Name
CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
CAPEC-13 Subverting Environment Variable Values
CAPEC-17 Accessing, Modifying or Executing Executable Files
CAPEC-39 Manipulating Opaque Client-based Data Tokens
CAPEC-45 Buffer Overflow via Symbolic Links
CAPEC-51 Poison Web Service Registry
CAPEC-59 Session Credential Falsification through Prediction
CAPEC-60 Reusing Session IDs (aka Session Replay)
CAPEC-76 Manipulating Input to File System Calls
CAPEC-77 Manipulating User-Controlled Variables
CAPEC-87 Forceful Browsing
CAPEC-104 Cross Zone Scripting

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-264 Permissions, Privileges, and Access Controls

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10376
 
Oval ID: oval:org.mitre.oval:def:10376
Title: The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass intended access restrictions.
Description: The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass intended access restrictions.
Family: unix Class: vulnerability
Reference(s): CVE-2008-4577
Version: 5
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Oracle Linux 5
Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 60
Os 3
Os 2
Os 1

OpenVAS Exploits

Date Description
2009-10-06 Name : Ubuntu USN-838-1 (dovecot)
File : nvt/ubuntu_838_1.nasl
2009-06-05 Name : Ubuntu USN-698-1 (nagios)
File : nvt/ubuntu_698_1.nasl
2009-04-09 Name : Mandriva Update for dovecot MDVSA-2008:232 (dovecot)
File : nvt/gb_mandriva_MDVSA_2008_232.nasl
2009-02-18 Name : SuSE Security Summary SUSE-SR:2009:004
File : nvt/suse_sr_2009_004.nasl
2009-02-17 Name : Fedora Update for dovecot FEDORA-2008-9202
File : nvt/gb_fedora_2008_9202_dovecot_fc9.nasl
2009-02-17 Name : Fedora Update for dovecot FEDORA-2008-9232
File : nvt/gb_fedora_2008_9232_dovecot_fc8.nasl
2009-01-26 Name : RedHat Security Advisory RHSA-2009:0205
File : nvt/RHSA_2009_0205.nasl
2008-12-29 Name : Ubuntu USN-697-1 (imlib2)
File : nvt/ubuntu_697_1.nasl
2008-12-29 Name : Ubuntu USN-698-2 (nagios3)
File : nvt/ubuntu_698_2.nasl
2008-12-29 Name : Ubuntu USN-699-1 (blender)
File : nvt/ubuntu_699_1.nasl
2008-12-23 Name : Gentoo Security Advisory GLSA 200812-16 (dovecot)
File : nvt/glsa_200812_16.nasl
2008-11-24 Name : FreeBSD Ports: dovecot
File : nvt/freebsd_dovecot1.nasl
2008-10-17 Name : Dovecot ACL Plugin Security Bypass Vulnerabilities
File : nvt/gb_dovecot_mult_sec_bypass_vuln.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
49099 Dovecot ACL Plugin k Right Mailbox Creation Restriction Bypass

49098 Dovecot ACL Plugin Negative Access Rights Bypass

Nessus® Vulnerability Scanner

Date Description
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20090120_dovecot_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2009-09-29 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-838-1.nasl - Type : ACT_GATHER_INFO
2009-07-21 Name : The remote openSUSE host is missing a security update.
File : suse_11_0_dovecot-090205.nasl - Type : ACT_GATHER_INFO
2009-04-23 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2008-232.nasl - Type : ACT_GATHER_INFO
2009-02-13 Name : The remote openSUSE host is missing a security update.
File : suse_dovecot-5986.nasl - Type : ACT_GATHER_INFO
2009-01-21 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2009-0205.nasl - Type : ACT_GATHER_INFO
2008-12-15 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200812-16.nasl - Type : ACT_GATHER_INFO
2008-11-21 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_75c24c1db68811dd88fd001c2514716c.nasl - Type : ACT_GATHER_INFO
2008-10-31 Name : The remote Fedora host is missing a security update.
File : fedora_2008-9202.nasl - Type : ACT_GATHER_INFO
2008-10-31 Name : The remote Fedora host is missing a security update.
File : fedora_2008-9232.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:39:48
  • Multiple Updates