SSL Version 2 v2 Protocol Detection
This entry from Security Metrics is followed up with the following CVE: CVE-2005-2969.
ClearOS contains backported fixes for this flaw prior to the general release.
The flaw reported in the CVE for this issue was fixed in a backported patch. That being said, negotiation of the SSLv2 is only a security issue if the traffic is intercepted. This issue, as such is not a vulnerability to the server but rather to the information transmitted via SSLv2 if the client selects that protocol.
This is not a vulnerability to the server but rather to data integrity.
Update the server to remove the CVE vulnerability.
The following settings should be replaced in your /etc/httpd/conf.d/ssl.conf file:
SSLProtocol -ALL +SSLv3 +TLSv1
You may also need to specify these settings in any specific virtual host file configuration that you use. Be sure to reload your configuration.
service httpd reload
To test the settings try the following:
openssl s_client -connect localhost:443 -ssl2
You should get a minimal output and NOT get the certificate. To try SSLv3:
openssl s_client -connect localhost:443 -ssl3
You should get an output that includes the certificate.
Test additional virtual hosts on the system:
openssl s_client -connect virtualhost.example.com:443 -ssl2