The remote host is missing an update to openssl announced via advisory DSA 2343-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202343-1

Several weak certificates were issued by Malaysian intermediate CA Digicert Sdn. Bhd. This event, along with other issues, has lead to Entrust Inc. and Verizon Cybertrust to revoke the CA's cross-signed certificates. This update to OpenSSL, a Secure Sockets Layer toolkit, reflects this decision by marking Digicert Sdn. Bhd.'s certificates as revoked. For the oldstable distribution (lenny), this problem has been fixed in version 0.9.8g-15+lenny14. For the stable distribution (squeeze), this problem has been fixed in version 0.9.8o-4squeeze4. For the testing distribution (wheezy), this problem will be fixed soon. For the unstable distribution (sid), this problem has been fixed in version 1.0.0e-2.1. We recommend that you upgrade your openssl packages.