The remote host is missing an update as announced via advisory SSA:2004-043-02.

https://secure1.securityspace.com/smysecure/catid.html?in=SSA:2004-043-02

New XFree86 base packages are available for Slackware 8.1, 9.0, 9.1, and -current. These fix overflows which could possibly be exploited to gain unauthorized root access. All sites running XFree86 should upgrade to the new package. More details about these issues may be found in the Common Vulnerabilities and Exposures (CVE) database: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0083 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0084 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0106