The remote host is missing an update to ntp announced via advisory MDVSA-2009:309.

To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. https://secure1.securityspace.com/smysecure/catid.html?in=MDVSA-2009:309

Multiple vulnerabilities has been found and corrected in ntp: Requesting peer information from a malicious remote time server may lead to an unexpected application termination or arbitrary code execution (CVE-2009-0159). 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 (CVE-2009-1252). Packages for 2008.0 are being provided due to extended support for Corporate products. The updated packages have been patched to prevent this. Affected: 2008.0