Executive Summary
| Summary | |
|---|---|
| Title | dovecot security and enhancement update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2011:0600 | First vendor Publication | 2011-05-19 |
| Vendor | RedHat | Last vendor Modification | 2011-05-19 |
| Severity (Vendor) | Moderate | Revision | 01 |
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:S/C:P/I:P/A:N) | |||
|---|---|---|---|
| Cvss Base Score | 5.5 | Attack Range | Network |
| Cvss Impact Score | 4.9 | Attack Complexity | Low |
| Cvss Expoit Score | 8 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: 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. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 637056 - rebase dovecot to 2.0 final 640410 - CVE-2010-3707 Dovecot: Failed to properly update ACL cache, when multiple rules defined rights for one subject 641276 - CVE-2010-3780 Dovecot: Busy master process, receiving a lot of SIGCHLD signals rapidly while logging, could die |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2011-0600.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-264 | Permissions, Privileges, and Access Controls |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:13521 | |||
| Oval ID: | oval:org.mitre.oval:def:13521 | ||
| Title: | USN-1059-1 -- dovecot vulnerabilities | ||
| Description: | It was discovered that the ACL plugin in Dovecot would incorrectly propagate ACLs to new mailboxes. A remote authenticated user could possibly read new mailboxes that were created with the wrong ACL. It was discovered that the ACL plugin in Dovecot would incorrectly merge ACLs in certain circumstances. A remote authenticated user could possibly bypass intended access restrictions and gain access to mailboxes. It was discovered that the ACL plugin in Dovecot would incorrectly grant the admin permission to owners of certain mailboxes. A remote authenticated user could possibly bypass intended access restrictions and gain access to mailboxes. It was discovered that Dovecot incorrecly handled the simultaneous disconnect of a large number of sessions. A remote authenticated user could use this flaw to cause Dovecot to crash, resulting in a denial of service | ||
| Family: | unix | Class: | patch |
| Reference(s): | USN-1059-1 CVE-2010-3304 CVE-2010-3706 CVE-2010-3707 CVE-2010-3779 CVE-2010-3780 | Version: | 5 |
| Platform(s): | Ubuntu 10.10 Ubuntu 10.04 | Product(s): | dovecot |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:21493 | |||
| Oval ID: | oval:org.mitre.oval:def:21493 | ||
| Title: | RHSA-2011:0600: dovecot security and enhancement update (Moderate) | ||
| Description: | Dovecot 1.2.x before 1.2.15 allows remote authenticated users to cause a denial of service (master process outage) by simultaneously disconnecting many (1) IMAP or (2) POP3 sessions. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:0600-01 CVE-2010-3707 CVE-2010-3780 | Version: | 29 |
| Platform(s): | Red Hat Enterprise Linux 6 | Product(s): | dovecot |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:23443 | |||
| Oval ID: | oval:org.mitre.oval:def:23443 | ||
| Title: | ELSA-2011:0600: dovecot security and enhancement update (Moderate) | ||
| Description: | Dovecot 1.2.x before 1.2.15 allows remote authenticated users to cause a denial of service (master process outage) by simultaneously disconnecting many (1) IMAP or (2) POP3 sessions. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011:0600-01 CVE-2010-3707 CVE-2010-3780 | Version: | 13 |
| Platform(s): | Oracle Linux 6 | Product(s): | dovecot |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:27953 | |||
| Oval ID: | oval:org.mitre.oval:def:27953 | ||
| Title: | DEPRECATED: ELSA-2011-0600 -- dovecot security and enhancement update (moderate) | ||
| Description: | [2.0.9-2] - fix issues and assert crashes found in 2.0.9 (lmtp,dotlock,zlib) [2.0.9-1] - dovecot updated to 2.0.9 - fixed a high system CPU usage / high context switch count performance problem - lda: Fixed a crash when trying to send 'out of quota' reply [2.0.8-1] - dovecot updated to 2.0.8 (fixes #654226), pigeonhole updated to 0.2.2 - IMAP: Fixed SELECT QRESYNC not to crash on mailbox close if a lot of changes w ere being sent. - Fixed leaking fds when writing to dovecot.mailbox.log. - Fixed rare dovecot.index.cache corruption - zlib: Fixed several crashes, which mainly showed up with mbox. - acl: Fixed crashing when sometimes listing shared mailboxes via dict proxy. - mdbox: Fixed potential assert-crash when saving multiple messages in one transaction - dsync: a lot of fixes - fixed lda + sieve crash | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011-0600 CVE-2010-3707 CVE-2010-3780 | Version: | 4 |
| Platform(s): | Oracle Linux 6 | Product(s): | dovecot |
| Definition Synopsis: | |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-06-06 | Name : RedHat Update for dovecot RHSA-2011:0600-01 File : nvt/gb_RHSA-2011_0600-01_dovecot.nasl |
| 2012-02-12 | Name : Gentoo Security Advisory GLSA 201110-04 (Dovecot) File : nvt/glsa_201110_04.nasl |
| 2011-02-11 | Name : Ubuntu Update for dovecot vulnerabilities USN-1059-1 File : nvt/gb_ubuntu_USN_1059_1.nasl |
| 2010-11-16 | Name : Mandriva Update for dovecot MDVSA-2010:217 (dovecot) File : nvt/gb_mandriva_MDVSA_2010_217.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 68515 | Dovecot plugins/acl/acl-backend-vfile.c ACL Permission Addition Specific Entr... Dovecot contains a flaw related to 'plugins/acl/acl-backend-vfile.c' interpreting a less specific ACL permissions entry of the same type as a previous more specific ACL entry as an addition rather than a replacement. This may allow a remote authenticated attacker to use a request to read or modify a mailbox to bypass intended access restrictions. |
| 68512 | Dovecot IMAP / POP3 Session Disconnect Master Process Outage Remote DoS Dovecot contains a flaw that may allow a remote denial of service. The issue is triggered when a remote authenticated attacker disconnects a large amount of IMAP or POP3 sessions simultaneously, and will result in loss of availability for the master process. |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_3_dovecot12-101028.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110519_dovecot_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
| 2011-10-11 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201110-04.nasl - Type : ACT_GATHER_INFO |
| 2011-05-20 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0600.nasl - Type : ACT_GATHER_INFO |
| 2011-02-08 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1059-1.nasl - Type : ACT_GATHER_INFO |
| 2010-11-01 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2010-217.nasl - Type : ACT_GATHER_INFO |
| 2010-10-30 | Name : The remote openSUSE host is missing a security update. File : suse_11_2_dovecot12-101028.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:54:43 |
|
