The remote host is missing an update to openldap2.3 announced via advisory DSA 1541-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201541-1

Several remote vulnerabilities have been discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2007-5707 Thomas Sesselmann discovered that slapd could be crashed by a malformed modify requests. CVE-2007-5708 Toby Blade discovered that incorrect memory handling in slapo-pcache could lead to denial of service through crafted search requests. CVE-2007-6698 It was discovered that a programming error in the interface to the BDB storage backend could lead to denial of service through crafted modify requests. CVE-2008-0658 It was discovered that a programming error in the interface to the BDB storage backend could lead to denial of service through crafted modrdn requests. For the stable distribution (etch), these problems have been fixed in version 2.3.30-5+etch1. For the unstable distribution (sid), these problems have been fixed in version 2.4.7-6.1. We recommend that you upgrade your openldap2.3 packages.