Logjam vulnerability

[uxbeginner22]

Nessus tell my hpsmh homepage is vulnerable to logjam

I have try to fix it with this solution

cat /opt/hpws22/apache/conf/dhparams.pem >> /opt/hpws22/apache/conf/ssl.crt/server.crt

And restart hpsmh

But doesn't work.

Why?

Those are ssl params

SSLProtocol -all +TLSv1 +TLSv1.1 +TLSv1.2

#   SSL Cipher Suite:
# List the ciphers that the client is permitted to negotiate.
# See the mod_ssl documentation for a complete list.
SSLCipherSuite ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD
5:!DSS:!RC4

[uxbeginner22]

I've add succesfully this line with smhconfig

ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA

but nessus still report error,of course i've added the dhparams.pem to cert.pem file with

cat dhparams.pem >> cert.pem  

and restart the app.

[uxbeginner22 · Accepted solution]

Solution found,

create first the dhparams

openssl dhparam -out dhparams.pem 2048
chmod 600 dhparams.pem

then add this to your certificates,in my case proxy.pem cert.pem

cat dhparams.pem >> /opt/hpsmh/certs/proxy.pem

cat dhparams.pem >> /opt/hpsmh/certs/cert.pem

then modify hpsmh to use correct ciphers

/opt/hpsmh/bin/smhconfig -Z `cat /cip.txt`

cip.txt contain those

ECDH+AESGCM:ECDH+AES256:ECDH+AES128:ECDH+3DES:RSA+AES:RSA+3DES:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!ADH:!AECDH:!MD5:!DSS:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA

Finally reload hpsmh

/opt/hpsmh/bin/hpsmh stop
/opt/hpsmh/bin/hpsmh start