USN-1139-1: Bind vulnerabilities

Releases

• Ubuntu 11.04
• Ubuntu 10.10
• Ubuntu 10.04
• Ubuntu 8.04

Packages

• 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 8.04

• libdns36 - 1:9.4.2.dfsg.P2-2ubuntu0.7

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

• libdns64 - 1:9.7.0.dfsg.P1-1ubuntu0.2

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

References

• CVE-2010-3762
• CVE-2011-1910