[gentoo-announce] [ GLSA 200903-14 ] BIND: Incorrect signature verification

[news 28]

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Gentoo Linux Security Advisory GLSA 200903-14

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http://security.gentoo.org/

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Severity: Normal

Title: BIND: Incorrect signature verification

Date: March 09, 2009

Bugs: #254134, #257949

ID: 200903-14

 

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Synopsis

========

 

Incomplete verification of RSA and DSA certificates might lead to

spoofed records authenticated using DNSSEC.

 

Background

==========

 

ISC BIND is the Internet Systems Consortium implementation of the

Domain Name System (DNS) protocol.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 net-dns/bind < 9.4.3_p1 >= 9.4.3_p1

 

Description

===========

 

BIND does not properly check the return value from the OpenSSL

functions to verify DSA (CVE-2009-0025) and RSA (CVE-2009-0265)

certificates.

 

Impact

======

 

A remote attacker could bypass validation of the certificate chain to

spoof DNSSEC-authenticated records.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All BIND users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=net-dns/bind-9.4.3_p1"

 

References

==========

 

[ 1 ] CVE-2009-0025

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0025

[ 2 ] CVE-2009-0265

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0265

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200903-14.xml

 

Concerns?

=========

 

Security is a primary focus of Gentoo Linux and ensuring the

confidentiality and security of our users machines is of utmost

importance to us. Any security concerns should be addressed to

security ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2009 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5