version alert about heartbleed-masstest HOT 3 CLOSED

Can you expand further by "match the server's version"? Note, I didn't write the original PoC used.

from heartbleed-masstest.

currently the heartbeat packet is fixed to hb = h2bin(''' 18 03 02 00 03 01 40 00''')
-> always version = 03.02 ( == tls1.1 )

if you would connect to a server running version 03.01 ( == tls1.0 )

the server would respond to the heartbeat request with a 'protocol_version alert' and then disconnect.

so you should match the version from the server_hello packet.

the hb packet should be changed like this: hb=hb[:2] + chr(ver&0xff) + hb[3:] in the loop checking for the serverhellodone message

you can check this by running a vulnerable openssl like this:

openssl s_server -key server.key -cert server-cer.pem -accept 4433 -msg -ssl3

and running the ssltest.py script against it. the current ssltest will not mark that server as vulnerable.

btw, there is another bug in ssltest.py: the 'hb' packet is sent twice, while once is sufficient.
first in is_vulnerable, second in hit_hb.

i will send you a pull request with a patch later.

from heartbleed-masstest.

Fixed in #28

from heartbleed-masstest.