The remote host is missing an update to squidGuard announced via advisory MDVSA-2009:293.

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-2009:293

Multiple vulnerabilities has been found and corrected in squidGuard: Buffer overflow in sgLog.c in squidGuard 1.3 and 1.4 allows remote attackers to cause a denial of service (application hang or loss of blocking functionality) via a long URL with many / (slash) characters, related to emergency mode. (CVE-2009-3700). Multiple buffer overflows in squidGuard 1.4 allow remote attackers to bypass intended URL blocking via a long URL, related to (1) the relationship between a certain buffer size in squidGuard and a certain buffer size in Squid and (2) a redirect URL that contains information about the originally requested URL (CVE-2009-3826). squidGuard was upgraded to 1.2.1 for MNF2/CS3/CS4 with additional upstream security and bug fixes patches applied. This update fixes these vulnerabilities. Affected: 2009.0, 2009.1, Corporate 3.0, Corporate 4.0, Enterprise Server 5.0, Multi Network Firewall 2.0