ISC BIND generates cryptographically weak DNS query IDs

Overview

ISC (Internet Systems Consortiuim) BIND generates cryptographically weak DNS query IDs which could allow a remote attacker to poison DNS caches.

Description

From the ISC Bind security page:

_The DNS query id generation is vulnerable to cryptographic analysis which provides a 1 in 8 chance of guessing the next query id for 50% of the query ids. This can be used to perform cache poisoning by an attacker.

This bug only affects outgoing queries, generated by BIND 9 to answer questions as a resolver, or when it is looking up data for internal uses, such as when sending NOTIFYs to slave name servers.

All users are encouraged to upgrade._

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Impact

A remote attacker could predict DNS query IDs and respond with arbitrary answers, thus poisoning DNS caches.

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Solution

Upgrade or Patch

This issue is addressed in ISC BIND 9.2.8-P1, BIND 9.3.4-P1, BIND 9.4.1-P1 or BIND 9.5.0a6. Users who obtain BIND from their operating system vendor should see the systems affected portion of this document for a partial list of affected vendors.

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Vendor Information

252735

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Debian GNU/Linux __ Affected

Notified: July 26, 2007 Updated: July 30, 2007

Status

Affected

Vendor Statement

The Debian project has fixed this vulnerability in its stable distribution Debian GNU/Linux 4.0 in version 9.3.4-2etch1 of bind9 and in its old stable distribution Debian GNU/Linux 3.1 in version 9.2.4-1sarge3 of bind9 via Debian Security Advisory 1341 as in

<<http://www.debian.org/security/2007/dsa-1341&gt;&gt;

Vendor Information

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

Addendum

See <http://www.debian.org/security/2007/dsa-1341&gt; for more details.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23252735 Feedback>).

Fujitsu Affected

Notified: July 26, 2007 Updated: October 01, 2007

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Internet Software Consortium __ Affected

Updated: July 27, 2007

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Addendum

See <http://www.isc.org/sw/bind/bind-security.php&gt; for more details.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23252735 Feedback>).

Openwall GNU/*/Linux __ Affected

Notified: July 26, 2007 Updated: August 08, 2007

Status

Affected

Vendor Statement

This weakness has been corrected for Openwall GNU/*/Linux (Owl) 2.0-stable and Owl-current as of 2007/07/30 by updating the BIND package to version 9.3.4-P1.

Vendor Information

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

Red Hat, Inc. __ Affected

Notified: July 26, 2007 Updated: July 28, 2007

Status

Affected

Vendor Statement

This issue affected the Bind package as shipped with Red Hat Enterprise Linux 2.1, 4, 4, and 5. Updated packages to correct this issue are available along with our advisories at the URLs below and via Red Hat Network.

Vendor Information

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

SUSE Linux __ Affected

Notified: July 26, 2007 Updated: August 03, 2007

Status

Affected

Vendor Statement

SUSE is affected by VU#252735 (CVE-2007-2926) and has released updates for it. Our advisory is at:

<http://www.novell.com/linux/security/advisories/2007_47_bind.html&gt;

Vendor Information

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

Sun Microsystems, Inc. __ Affected

Notified: July 26, 2007 Updated: August 03, 2007

Status

Affected

Vendor Statement

Solaris 10 is affected by this issue. Sun has published Sun Alert 103018 for this issue which is available here:

<http://sunsolve.sun.com/search/document.do?assetkey=1-26-103018-1&gt;

Vendor Information

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

Ubuntu __ Affected

Notified: July 26, 2007 Updated: August 06, 2008

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Addendum

See <http://www.ubuntu.com/usn/usn-491-1&gt; for more details.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23252735 Feedback>).

EMC Corporation Not Affected

Notified: July 26, 2007 Updated: July 30, 2007

Status

Not Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Hitachi Not Affected

Notified: July 26, 2007 Updated: July 30, 2007

Status

Not Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Apple Computer, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Conectiva Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Cray Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Engarde Secure Linux Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

F5 Networks, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Fedora Project Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

FreeBSD, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Gentoo Linux Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Hewlett-Packard Company Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

IBM Corporation Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

IBM Corporation (zseries) Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

IBM eServer Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Immunix Communications, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Ingrian Networks, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Juniper Networks, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Mandriva, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Microsoft Corporation Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

MontaVista Software, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

NEC Corporation Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

NetBSD Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Novell, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

OpenBSD Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

QNX, Software Systems, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Silicon Graphics, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Slackware Linux Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Sony Corporation Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

The SCO Group Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Trustix Secure Linux Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Turbolinux Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Unisys Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

Wind River Systems, Inc. Unknown

Notified: July 26, 2007 Updated: July 26, 2007

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

View all 41 vendors __View less vendors __

CVSS Metrics

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References

• <http://www.isc.org/sw/bind/bind-security.php&gt;
• <http://www.trusteer.com/docs/bind9dns.html&gt;
• <http://jvn.jp/cert/JVNVU%23252735/index.html&gt;
• <http://secunia.com/advisories/26195/&gt;
• <http://www.milw0rm.com/exploits/4266&gt;
• <http://docs.info.apple.com/article.html?artnum=307041&gt;

Acknowledgements

This vulnerability was reported by ISC who credit Amit Klein from Trusteer.

This document was written by Ryan Giobbi.

Other Information

CVE IDs:	CVE-2007-2926
Severity Metric:	3.83 Date Public: