USN-1110-1: KDE-Libs vulnerabilities

14 April 2011

kde4libs vulnerabilities

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10

Summary

An attacker could send crafted input to Konqueror to view sensitive information.

Software Description

  • kde4libs - KDE 4 core applications

Details

It was discovered that KDE KSSL did not properly verify X.509 certificates when the certificate was issued for an IP address. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. (CVE-2011-1094)

Tim Brown discovered that KDE KHTML did not properly escape URLs from externally generated error pages. An attacker could expoit this to conduct cross-site scripting attacks. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data (such as passwords), within the same domain. (CVE-2011-1168)

Update instructions

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

Ubuntu 10.10
libkhtml5 - 4:4.5.1-0ubuntu8.1
libkio5 - 4:4.5.1-0ubuntu8.1
Ubuntu 10.04 LTS
kdelibs5 - 4:4.4.5-0ubuntu1.1
Ubuntu 9.10
kdelibs5 - 4:4.3.2-0ubuntu7.3

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

After a standard system update you need to restart any applications that use KSSL or KHTML, such as Konqueror, to make all the necessary changes.

References