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BIND 9.3.0 vulnerable to denial of service in validator code

Vulnerability Note VU#938617

Original Release Date: 2005-01-25 | Last Revised: 2005-06-21

Overview

A vulnerability in the BIND name server could allow a remote attacker to cause a denial of service against an affected system.

Description

The Berkeley Internet Name Domain (BIND) is a popular Domain Name System (DNS) implementation from Internet Systems Consortium (ISC). BIND supports the DNS Security Extensions (DNSSEC), including the NextSECure (NSEC) RDATA Format defined by RFC3845. An incorrect assumption in the validator function authvalidated()can result in an internal consistancy test failing and named exiting. An attacker with the ability to craft specific DNS packets could exploit this vulnerability to cause a denial of service. This vulnerability only affects BIND version 9.3.0.

Impact

A remote attacker may be able to cause the name server daemon to exit prematurely, thereby causing a denial of service for DNS operations.

Solution

Apply a patch from the vendor

Patches have been released in response to this issue. Please see the Systems Affected section of this document.

Upgrade

Users who compile their own versions of BIND from the original ISC source code are encouraged to upgrade to BIND version 9.3.1, which includes a patch for this issue.

Workarounds


ISC recommends that users that are unable to apply the patch ensure that dnssec validation is turned off (it is off by default) at the options/view level. The relevant BIND configuration directive is:

dnssec-enable no;

Vendor Information

938617
 
Affected   Unknown   Unaffected

FreeBSD

Notified:  January 17, 2005 Updated:  June 21, 2005

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The FreeBSD security team has released FreeBSD Security Advisory FreeBSD-SA-05:12.bind9 in response to this issue. Users are encouraged to review this advisory and apply the patches it refers to.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

ISC

Updated:  January 25, 2005

Status

  Vulnerable

Vendor Statement

Workaround:

Turn off dnssec validation (off by default) at
the options/view level.

    dnssec-enable no;

Fix:

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

MandrakeSoft

Notified:  January 17, 2005 Updated:  January 31, 2005

Status

  Vulnerable

Vendor Statement

Mandrakesoft has fixed VU#938617 in advisory MDKSA-2005:023.  We do not
ship any products with BIND 8 so are not vulnerable to VU#327633.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Mandrakesoft has published Mandrakelinux Security Update Advisory MDKSA-2005:023 in response to this issue. Users are encouraged to review this advisory and apply the patches it refers to.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Trustix Secure Linux

Updated:  February 16, 2005

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The Trustix development team has published Trustix Secure Linux Security Advisory #2005-0003 in response to this issue. Users are encouraged to review this advisory and apply the patches it refers to.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Apple Computer Inc.

Notified:  January 17, 2005 Updated:  March 18, 2005

Status

  Not Vulnerable

Vendor Statement

Mac OS X 10.2, Mac OS X Server 10.2, and later do not contain this issue as the DNS packages distributed are not susceptible to the vulnerability described in this advisory.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Check Point

Notified:  January 17, 2005 Updated:  January 24, 2005

Status

  Not Vulnerable

Vendor Statement

Check Point products are not vulnerable to these issues.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Debian

Notified:  January 17, 2005 Updated:  January 25, 2005

Status

  Not Vulnerable

Vendor Statement

It seems that Debian stable is not vulnerable to either vulnerability
and Debian testing/unstable is only vulnerable to CAN-2005-033 (VU#327633).
The versions included are too old and the vulnerability does not seem to
be present in the older versions indeed.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Hitachi

Notified:  January 17, 2005 Updated:  January 20, 2005

Status

  Not Vulnerable

Vendor Statement

NOT VULNERABLE
Hitachi HI-UX/WE2 is NOT Vulnerable to this issue.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

IBM

Notified:  January 17, 2005 Updated:  January 24, 2005

Status

  Not Vulnerable

Vendor Statement

The AIX Operating System is not vulnerable to the issues discussed in CERT
Vulnerability Notes VU#938617, VU#327633 or any Technical Cyber Security
Alerts related to these issues.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

InfoBlox

Notified:  February 04, 2005 Updated:  March 18, 2005

Status

  Not Vulnerable

Vendor Statement

VU #938617:  BIND 9.3.0 vulnerable to denial of service in validator code

The Infoblox DNS One product is not vulnerable.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Juniper Networks

Notified:  January 17, 2005 Updated:  January 24, 2005

Status

  Not Vulnerable

Vendor Statement

Juniper Networks products are not susceptible to this vulnerability

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

NEC Corporation

Notified:  January 17, 2005 Updated:  March 18, 2005

Status

  Not Vulnerable

Vendor Statement

* NEC products are NOT susceptible to this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Red Hat Inc.

Notified:  January 17, 2005 Updated:  January 18, 2005

Status

  Not Vulnerable

Vendor Statement

Red Hat Enterprise Linux ships with a BIND package, however we have verified
that the versions included in Red Hat Enterprise Linux are not vulnerable to
these issues.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Sun Microsystems Inc.

Notified:  January 17, 2005 Updated:  January 24, 2005

Status

  Not Vulnerable

Vendor Statement

Sun is not affected by either of these vulnerabilities.  No version of
Solaris ships with any of the affected versions of BIND and the Sun Java
Desktop System (Linux) doesn't ship an affected version of BIND either.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Adns

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

BlueCat Networks

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Conectiva

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Cray Inc.

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

EMC Corporation

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Engarde

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

F5 Networks

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Fujitsu

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

GNU glibc

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Hewlett-Packard Company

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

IBM eServer

Notified:  January 17, 2005 Updated:  February 01, 2005

Status

  Unknown

Vendor Statement

For information related to this and other published CERT
Advisories that may relate to the IBM eServer Platforms (xSeries,
iSeries, pSeries, and zSeries) please go to
https://app-06.www.ibm.com/servers/resourcelink/lib03020.nsf/pages/securityalerts?OpenDocument&pathID=

In order to access this information you will require a Resource Link ID.
To subscribe to Resource Link go to
http://app-06.www.ibm.com/servers/resourcelink
and follow the steps for registration.

All questions should be refferred to servsec@us.ibm.com.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

IBM-zSeries

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Immunix

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Ingrian Networks

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Lucent Technologies

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Men&Mice

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

MetaSolv Software Inc.

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Microsoft Corporation

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

MontaVista Software

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

NetBSD

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Nokia

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Nortel Networks

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Novell

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

OpenBSD

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Openwall GNU/*/Linux

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

SCO-LINUX

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

SCO-UNIX

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

SGI

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Sequent

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Sony Corporation

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

SuSE Inc.

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

TurboLinux

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Unisys

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Wind River Systems Inc.

Notified:  January 17, 2005 Updated:  January 17, 2005

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

US-CERT has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Credit

Thanks to Joao Damas of the Internet Systems Consortium for reporting this vulnerability.

This document was written by Chad Dougherty based on information provided by ISC.

Other Information

CVE IDs: CVE-2005-0034
Severity Metric: 1.91
Date Public: 2005-01-25
Date First Published: 2005-01-25
Date Last Updated: 2005-06-21 13:36 UTC
Document Revision: 20

Sponsored by the Department of Homeland Security Office of Cybersecurity and Communications.