USN-1450-1: Net-SNMP vulnerability

23 May 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


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


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

To update your system, please follow these instructions:

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