The remote host is missing an update to courier announced via advisory DSA 793-1. Jakob Balle discovered a vulnerability in the handling of attachments in sqwebmail, a web mail application provided by the courier mail suite, which can be exploited by an attacker to conduct script insertion attacks. For the old stable distribution (woody) this problem has been fixed in version 0.37.3-2.6.

For the stable distribution (sarge) this problem has been fixed in version 0.47-4sarge2. For the unstable distribution (sid) this problem has been fixed in version 0.47-8. We recommend that you upgrade your sqwebmail package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20793-1