USN-1181-1: libsoup vulnerability

28 July 2011

libsoup2.4 vulnerability

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

  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS


An attacker could send crafted URLs to a SoupServer application and obtain unintended access to files.

Software Description

  • libsoup2.4 - HTTP client/server library for GNOME


It was discovered that libsoup did not properly validate its input when processing SoupServer requests. A remote attacker could exploit this to access files via directory traversal.

Update instructions

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

Ubuntu 11.04
libsoup2.4-1 - 2.34.0-0ubuntu1.1
Ubuntu 10.10
libsoup2.4-1 - 2.31.92-0ubuntu1.1
Ubuntu 10.04 LTS
libsoup2.4-1 - 2.30.2-0ubuntu0.2

To update your system, please follow these instructions:

After a standard system update you need to restart any applications that use libsoup to make all the necessary changes.