1. Ubuntu Security Notices
  2. USN-888-1

USN-888-1: Bind vulnerabilities

Publication date

20 January 2010

Overview

Bind vulnerabilities

Releases

Packages

Details

It was discovered that Bind would incorrectly cache bogus NXDOMAIN
responses. When DNSSEC validation is in use, a remote attacker could
exploit this to cause a denial of service, and possibly poison DNS caches.
(CVE-2010-0097)

USN-865-1 provided updated Bind packages to fix a security vulnerability.
The upstream security patch to fix CVE-2009-4022 was incomplete and
CVE-2010-0290 was assigned to the issue. This update corrects the problem.
Original advisory details:

Michael Sinatra discovered that Bind did not correctly validate certain
records added to its cache. When DNSSEC validation is in use, a remote
attacker could exploit this to spoof DNS entries and poison DNS caches.
Among other things, this could lead to misdirected email and web traffic.

It was discovered that Bind would incorrectly cache bogus NXDOMAIN
responses. When DNSSEC validation is in use, a remote attacker could
exploit this to cause a denial of service, and possibly poison DNS caches.
(CVE-2010-0097)

USN-865-1 provided updated Bind packages to fix a security vulnerability.
The upstream security patch to fix CVE-2009-4022 was incomplete and
CVE-2010-0290 was assigned to the issue. This update corrects the problem.
Original advisory details:

Michael Sinatra discovered that Bind did not correctly validate certain
records added to its cache. When DNSSEC validation is in use, a remote
attacker could exploit this to spoof DNS entries and poison DNS caches.
Among other things, this could lead to misdirected email and web traffic.

Update instructions

In general, a standard system upgrade is sufficient to effect the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
9.10 karmic libdns53 –  1:9.6.1.dfsg.P1-3ubuntu0.3
9.04 jaunty libdns46 –  1:9.5.1.dfsg.P2-1ubuntu0.4
8.10 intrepid libdns44 –  1:9.5.0.dfsg.P2-1ubuntu3.5
8.04 hardy libdns36 –  1:9.4.2.dfsg.P2-2ubuntu0.5
6.06 dapper libdns23 –  1:9.3.2-2ubuntu1.11

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References

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