The remote host is missing an update to ecartis, listar announced via advisory DSA 271-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20271-1

A problem has been discovered in ecartis, a mailing list manager, formerly known as listar. This vulnerability enables an attacker to reset the password of any user defined on the list server, including the list admins. For the stable distribution (woody) this problem has been fixed in version 0.129a+1.0.0-snap20020514-1.1 of ecartis. For the old stable distribution (potato) this problem has been fixed in version 0.129a-2.potato3 of listar. For the unstable distribution (sid) this problem has been fixed in version 1.0.0+cvs.20030321-1 of ecartis. We recommend that you upgrade your ecartis and listar packages.