Secunia Security Advisory – Paul Szabo has reported a security issue in GNOME libzvt, which can be exploited by malicious, local users to spoof the hostname that is recorded into utmp.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/40349/sa17023.txt
Source: https://packetstormsecurity.com/files/40349/Secunia-Security-Advisory-17023.html