The remote host is missing an update to evolution-data-server announced via advisory DSA 1813-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201813-1

Several vulnerabilities have been found in evolution-data-server, the database backend server for the evolution groupware suite. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2009-0587 It was discovered that evolution-data-server is prone to integer overflows triggered by large base64 strings. CVE-2009-0547 Joachim Breitner discovered that S/MIME signatures are not verified properly, which can lead to spoofing attacks. CVE-2009-0582 It was discovered that NTLM authentication challenge packets are not validated properly when using the NTLM authentication method, which could lead to an information disclosure or a denial of service. For the oldstable distribution (etch), these problems have been fixed in version 1.6.3-5etch2. For the stable distribution (lenny), these problems have been fixed in version 2.22.3-1.1+lenny1. For the testing distribution (squeeze) and the unstable distribution (sid), these problems have been fixed in version 2.26.1.1-1. We recommend that you upgrade your evolution-data-server packages.