Debian Linux Security Advisory 1943-1 – It was discovered that OpenLDAP, a free implementation of the Lightweight Directory Access Protocol, when OpenSSL is used, does not properly handle a ‘ ’ character in a domain name in the subject’s Common Name (CN) 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/83390/dsa-1943-1.txt
Source: https://packetstormsecurity.com/files/83390/Debian-Linux-Security-Advisory-1943-1.html