The remote host is missing an update to apache announced via advisory DSA 594-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20594-1

Two vulnerabilities have been identified in the Apache 1.3 webserver: CVE-2004-0940 Crazy Einstein has discovered a vulnerability in the mod_include module, which can cause a buffer to be overflown and could lead to the execution of arbitrary code. NO VULN ID Larry Cashdollar has discovered a potential buffer overflow in the htpasswd utility, which could be exploited when user-supplied is passed to the program via a CGI (or PHP, or ePerl, ...) program. For the stable distribution (woody) these problems have been fixed in version 1.3.26-0woody6. For the unstable distribution (sid) these problems have been fixed in version 1.3.33-2. We recommend that you upgrade your apache packages.