Executive Summary
| Summary | |
|---|---|
| Title | bind-dyndb-ldap security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2012:0683 | First vendor Publication | 2012-05-21 |
| Vendor | RedHat | Last vendor Modification | 2012-05-21 |
| Severity (Vendor) | Important | 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:M/Au:N/C:N/I:N/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 4.3 | Attack Range | Network |
| Cvss Impact Score | 2.9 | Attack Complexity | Medium |
| Cvss Expoit Score | 8.6 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: An updated bind-dyndb-ldap package that fixes one security issue is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: The dynamic LDAP back end is a plug-in for BIND that provides back-end capabilities to LDAP databases. It features support for dynamic updates and internal caching that help to reduce the load on LDAP servers. A flaw was found in the way bind-dyndb-ldap handled LDAP query errors. If a remote attacker were able to send DNS queries to a named server that is configured to use bind-dyndb-ldap, they could trigger such an error with a DNS query leveraging bind-dyndb-ldap's insufficient escaping of the LDAP base DN (distinguished name). This would result in an invalid LDAP query that named would retry in a loop, preventing it from responding to other DNS queries. With this update, bind-dyndb-ldap only attempts to retry one time when an LDAP search returns an unexpected error. (CVE-2012-2134) Red Hat would like to thank Ronald van Zantvoort for reporting this issue. All bind-dyndb-ldap users should upgrade to this updated package, which contains a backported patch to correct this issue. For the update to take effect, the named service must be restarted. 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/knowledge/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 815846 - CVE-2012-2134 bind-dyndb-ldap: Bind DoS (named hang) by processing DNS query for zone served by bind-dyndb-ldap |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2012-0683.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-399 | Resource Management Errors |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:21137 | |||
| Oval ID: | oval:org.mitre.oval:def:21137 | ||
| Title: | RHSA-2012:0683: bind-dyndb-ldap security update (Important) | ||
| Description: | The handle_connection_error function in ldap_helper.c in bind-dyndb-ldap before 1.1.0rc1 does not properly handle LDAP query errors, which allows remote attackers to cause a denial of service (infinite loop and named server hang) via a non-alphabet character in the base DN in an LDAP search DNS query. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2012:0683-01 CESA-2012:0683 CVE-2012-2134 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 6 CentOS Linux 6 | Product(s): | bind-dyndb-ldap |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:23843 | |||
| Oval ID: | oval:org.mitre.oval:def:23843 | ||
| Title: | ELSA-2012:0683: bind-dyndb-ldap security update (Important) | ||
| Description: | The handle_connection_error function in ldap_helper.c in bind-dyndb-ldap before 1.1.0rc1 does not properly handle LDAP query errors, which allows remote attackers to cause a denial of service (infinite loop and named server hang) via a non-alphabet character in the base DN in an LDAP search DNS query. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2012:0683-01 CVE-2012-2134 | Version: | 6 |
| Platform(s): | Oracle Linux 6 | Product(s): | bind-dyndb-ldap |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:27380 | |||
| Oval ID: | oval:org.mitre.oval:def:27380 | ||
| Title: | DEPRECATED: ELSA-2012-0683 -- bind-dyndb-ldap security update (important) | ||
| Description: | [0.2.0-7.1] - fix for CVE-2012-2134 | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2012-0683 CVE-2012-2134 | Version: | 4 |
| Platform(s): | Oracle Linux 6 | Product(s): | bind-dyndb-ldap |
| Definition Synopsis: | |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-10-23 | Name : Fedora Update for bind-dyndb-ldap FEDORA-2012-15965 File : nvt/gb_fedora_2012_15965_bind-dyndb-ldap_fc17.nasl |
| 2012-10-23 | Name : Fedora Update for bind-dyndb-ldap FEDORA-2012-15981 File : nvt/gb_fedora_2012_15981_bind-dyndb-ldap_fc16.nasl |
| 2012-08-30 | Name : Fedora Update for bind-dyndb-ldap FEDORA-2012-11470 File : nvt/gb_fedora_2012_11470_bind-dyndb-ldap_fc17.nasl |
| 2012-08-30 | Name : Fedora Update for bind-dyndb-ldap FEDORA-2012-6666 File : nvt/gb_fedora_2012_6666_bind-dyndb-ldap_fc17.nasl |
| 2012-08-21 | Name : Fedora Update for bind-dyndb-ldap FEDORA-2012-11464 File : nvt/gb_fedora_2012_11464_bind-dyndb-ldap_fc16.nasl |
| 2012-07-30 | Name : CentOS Update for bind-dyndb-ldap CESA-2012:0683 centos6 File : nvt/gb_CESA-2012_0683_bind-dyndb-ldap_centos6.nasl |
| 2012-07-09 | Name : RedHat Update for bind-dyndb-ldap RHSA-2012:0683-01 File : nvt/gb_RHSA-2012_0683-01_bind-dyndb-ldap.nasl |
| 2012-05-17 | Name : Fedora Update for bind-dyndb-ldap FEDORA-2012-6722 File : nvt/gb_fedora_2012_6722_bind-dyndb-ldap_fc16.nasl |
| 2012-05-17 | Name : Fedora Update for bind-dyndb-ldap FEDORA-2012-6759 File : nvt/gb_fedora_2012_6759_bind-dyndb-ldap_fc15.nasl |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2013-07-12 | Name : The remote Oracle Linux host is missing a security update. File : oraclelinux_ELSA-2012-0683.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20120521_bind_dyndb_ldap_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
| 2012-05-29 | Name : The remote Fedora host is missing a security update. File : fedora_2012-6666.nasl - Type : ACT_GATHER_INFO |
| 2012-05-23 | Name : The remote CentOS host is missing a security update. File : centos_RHSA-2012-0683.nasl - Type : ACT_GATHER_INFO |
| 2012-05-22 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0683.nasl - Type : ACT_GATHER_INFO |
| 2012-05-16 | Name : The remote Fedora host is missing a security update. File : fedora_2012-6722.nasl - Type : ACT_GATHER_INFO |
| 2012-05-16 | Name : The remote Fedora host is missing a security update. File : fedora_2012-6759.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-27 21:25:46 |
|
| 2014-02-26 21:25:28 |
|
| 2014-02-17 11:55:57 |
|
