The remote host is missing an update to lsh-utils announced via advisory DSA 717-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20717-1

Several security relevant problems have been discovered in lsh, the alternative secure shell v2 (SSH2) protocol server. The Common Vulnerabilities and Exposures project identifies the following vulnerabilities: CVE-2003-0826 Bennett Todd discovered a heap buffer overflow in lshd which could lead to the execution of arbitrary code. CVE-2005-0814 Niels Möller discovered a denial of service condition in lshd. For the stable distribution (woody) these problems have been fixed in version 1.2.5-2woody3. For the unstable distribution (sid) these problems have been fixed in version 2.0.1-2. We recommend that you upgrade your lsh-server package.