Red Hat Security Advisory
Synopsis: Moderate: kdelibs security update
Advisory ID: RHSA-2011:0464-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0464.html
Issue date: 2011-04-21
CVE Names: CVE-2011-1094 CVE-2011-1168
Updated kdelibs packages that fix two security issues are now available for
Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
The kdelibs packages provide libraries for the K Desktop Environment (KDE).
A cross-site scripting (XSS) flaw was found in the way KHTML, the HTML
layout engine used by KDE applications such as the Konqueror web browser,
displayed certain error pages. A remote attacker could use this flaw to
perform a cross-site scripting attack against victims by tricking them into
visiting a specially-crafted URL. (CVE-2011-1168)
A flaw was found in the way kdelibs checked the user specified hostname
against the name in the server's SSL certificate. A man-in-the-middle
attacker could use this flaw to trick an application using kdelibs into
mistakenly accepting a certificate as if it was valid for the host, if that
certificate was issued for an IP address to which the user specified
hostname was resolved to. (CVE-2011-1094)
Note: As part of the fix for CVE-2011-1094, this update also introduces
stricter handling for wildcards used in servers' SSL certificates.
Users should upgrade to these updated packages, which contain backported
patches to correct these issues. The desktop must be restarted (log out,
then log back in) for this update to take effect.
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
5. Bugs fixed (http://bugzilla.redhat.com/):
632114 - CVE-2011-1094 kdelibs: SSL certificate for IP address accepted as valid for hosts that resolve to the IP
695398 - CVE-2011-1168 kdelibs: partially universal XSS in Konqueror error pages