USN-1783-1: Bind vulnerability

Releases

• Ubuntu 12.10
• Ubuntu 12.04
• Ubuntu 11.10
• Ubuntu 10.04

Packages

• bind9 - Internet Domain Name Server

Details

Matthew Horsfall discovered that Bind incorrectly handled regular
expression checking. A remote attacker could use this flaw to cause Bind to
consume an excessive amount of memory, possibly resulting in a denial of
service. This issue was corrected by disabling RDATA regular expression
syntax checking.

Update instructions

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

Ubuntu 12.10

• bind9 - 1:9.8.1.dfsg.P1-4.2ubuntu3.2
• libdns81 - 1:9.8.1.dfsg.P1-4.2ubuntu3.2

Ubuntu 12.04

• bind9 - 1:9.8.1.dfsg.P1-4ubuntu0.6
• libdns81 - 1:9.8.1.dfsg.P1-4ubuntu0.6

Ubuntu 11.10

• bind9 - 1:9.7.3.dfsg-1ubuntu4.6
• libdns69 - 1:9.7.3.dfsg-1ubuntu4.6

Ubuntu 10.04

• libdns64 - 1:9.7.0.dfsg.P1-1ubuntu0.9
• bind9 - 1:9.7.0.dfsg.P1-1ubuntu0.9

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

References

• CVE-2013-2266