Mandriva Linux Security Advisory 2009-117 – A buffer overflow flaw was discovered in the ntpd daemon’s NTPv4 authentication code. If ntpd was configured to use public key cryptography for NTP packet authentication, a remote attacker could use this flaw to send a specially-crafted request packet that could crash ntpd. The updated packages have been patched to prevent this.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/77652/MDVSA-2009-117.txt
Source: https://packetstormsecurity.com/files/77652/Mandriva-Linux-Security-Advisory-2009-117.html