Debian Linux Security Advisory 1916-1 – Dan Kaminsky and Moxie Marlinspike discovered that kdelibs, core libraries from the official KDE release, does not properly handle a ‘ ’ character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/82185/dsa-1916-1.txt
Source: https://packetstormsecurity.com/files/82185/Debian-Linux-Security-Advisory-1916-1.html