=========================================================================Ubuntu Security Notice USN-1450-1
May 23, 2012

net-snmp vulnerability
=========================================================================
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:

Net-SNMP could be made to crash if it received specially crafted network
traffic.

Software Description:
- net-snmp: SNMP (Simple Network Management Protocol) server and applications

Details:

It was discovered that Net-SNMP incorrectly performed entry lookups in the
extension table. A remote attacker could send a specially crafted request
and cause the SNMP server to crash, leading to a denial of service.

Update instructions:

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

Ubuntu 12.04 LTS:
  libsnmp15                       5.4.3~dfsg-2.4ubuntu1.1

Ubuntu 11.10:
  libsnmp15                       5.4.3~dfsg-2.2ubuntu1.1

Ubuntu 11.04:
  libsnmp15                       5.4.3~dfsg-2ubuntu1.1

Ubuntu 10.04 LTS:
  libsnmp15                       5.4.2.1~dfsg0ubuntu1-0ubuntu2.2

Ubuntu 8.04 LTS:
  libsnmp15                       5.4.1~dfsg-4ubuntu4.4

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

References:
  https://ubuntu.com/security/notices/USN-1450-1
  CVE-2012-2141

Package Information:
  https://launchpad.net/ubuntu/+source/net-snmp/5.4.3~dfsg-2.4ubuntu1.1
  https://launchpad.net/ubuntu/+source/net-snmp/5.4.3~dfsg-2.2ubuntu1.1
  https://launchpad.net/ubuntu/+source/net-snmp/5.4.3~dfsg-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/net-snmp/5.4.2.1~dfsg0ubuntu1-0ubuntu2.2
  https://launchpad.net/ubuntu/+source/net-snmp/5.4.1~dfsg-4ubuntu4.4