USN-1118-1: OpenSLP vulnerability

20 April 2011

openslp, openslp-dfsg vulnerability

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS


An attacker could send crafted input to OpenSLP and cause it to hang.

Software Description

  • openslp-dfsg - OpenSLP is an implementation of the Service Location Protocol
  • openslp - OpenSLP is an implementation of the Service Location Protocol


It was discovered that OpenSLP incorrectly handled certain corrupted messages. A remote attacker could send a specially crafted packet to the OpenSLP server and cause it to hang, leading to a denial of service.

Update instructions

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

Ubuntu 10.10
libslp1 - 1.2.1-7.7ubuntu0.1
Ubuntu 10.04 LTS
libslp1 - 1.2.1-7.6ubuntu0.1
Ubuntu 9.10
libslp1 - 1.2.1-7.5ubuntu0.1
Ubuntu 8.04 LTS
libslp1 - 1.2.1-7.1ubuntu0.2
Ubuntu 6.06 LTS
libslp1 - 1.2.1-5ubuntu0.2

To update your system, please follow these instructions:

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