USN-1248-1: KDE-Libs vulnerability

25 October 2011

KDE-Libs could improperly display fraudulent security certificates.

Releases

Packages

  • kde4libs - KDE 4 core applications and libraries

Details

Tim Brown discovered that KSSL in KDE-Libs did not properly perform input
validation when displaying the common name (CN) for an SSL certificate. An
attacker could exploit this to spoof the common name which could be used in
an attack to trick the user into accepting a fraudulent certificate. This
issue only affected Ubuntu 10.04 LTS and Ubuntu 10.10. (CVE-2011-3365)

It was discovered that KIO in KDE-Libs did not properly perform input
validation during proxy authentication. An attacker could exploit this to
modify displaying of the realm and proxy URL.

Update instructions

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

Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

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

References