USN-1462-1: Bind vulnerabilities

Ubuntu Security Notice USN-1462-1

5th June, 2012

bind9 vulnerabilities

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

Bind could be made to crash if it received specially crafted network traffic.

Software description

  • bind9 - Internet Domain Name Server

Details

Dan Luther discovered that Bind incorrectly handled zero length rdata
fields. A remote attacker could use this flaw to cause Bind to crash or
behave erratically, resulting in a denial of service. (CVE-2012-1667)

It was discovered that Bind incorrectly handled revoked domain names. A
remote attacker could use this flaw to cause malicious domain names to be
continuously resolvable even after they have been revoked. (CVE-2012-1033)

Update instructions

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

Ubuntu 12.04 LTS:
libdns81 1:9.8.1.dfsg.P1-4ubuntu0.1
Ubuntu 11.10:
libdns69 1:9.7.3.dfsg-1ubuntu4.2
Ubuntu 11.04:
libdns69 1:9.7.3.dfsg-1ubuntu2.4
Ubuntu 10.04 LTS:
libdns64 1:9.7.0.dfsg.P1-1ubuntu0.5
Ubuntu 8.04 LTS:
libdns36 1:9.4.2.dfsg.P2-2ubuntu0.10

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2012-1033, CVE-2012-1667