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Sicherheit: Zwei Probleme in BIND
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in BIND
ID: USN-1139-1
Distribution: Ubuntu
Plattformen: Ubuntu 8.04 LTS, Ubuntu 10.04 LTS, Ubuntu 10.10, Ubuntu 11.04
Datum: Mo, 30. Mai 2011, 21:55
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3762
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1910
Applikationen: BIND

Originalnachricht


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==========================================================================
Ubuntu Security Notice USN-1139-1
May 30, 2011

bind9 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

An attacker could send crafted input to Bind and cause it to crash.

Software Description:
- bind9: Internet Domain Name Server

Details:

It was discovered that Bind incorrectly handled certain bad signatures if
multiple trust anchors existed for a single zone. A remote attacker could
use this flaw to cause Bind to stop responding, resulting in a denial of
service. This issue only affected Ubuntu 8.04 LTS and 10.04 LTS.
(CVE-2010-3762)

Frank Kloeker and Michael Sinatra discovered that Bind incorrectly handled
certain very large RRSIG RRsets included in negative responses. A remote
attacker could use this flaw to cause Bind to stop responding, resulting in
a denial of service. (CVE-2011-1910)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
libdns69 1:9.7.3.dfsg-1ubuntu2.1

Ubuntu 10.10:
libdns66 1:9.7.1.dfsg.P2-2ubuntu0.3

Ubuntu 10.04 LTS:
libdns64 1:9.7.0.dfsg.P1-1ubuntu0.2

Ubuntu 8.04 LTS:
libdns36 1:9.4.2.dfsg.P2-2ubuntu0.7

In general, a standard system update will make all the necessary changes.

References:
CVE-2010-3762, CVE-2011-1910

Package Information:
https://launchpad.net/ubuntu/+source/bind9/1:9.7.3.dfsg-1ubuntu2.1
https://launchpad.net/ubuntu/+source/bind9/1:9.7.1.dfsg.P2-2ubuntu0.3
https://launchpad.net/ubuntu/+source/bind9/1:9.7.0.dfsg.P1-1ubuntu0.2
https://launchpad.net/ubuntu/+source/bind9/1:9.4.2.dfsg.P2-2ubuntu0.7



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