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Fix error when comm.opencon fails and banner is an oops object

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This commit is contained in:
dmiller 2026-04-07 19:59:48 +00:00
parent f752603604
commit b14bba972f
1 changed files with 4 additions and 2 deletions
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6
scripts/ssh-hostkey.nse
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@ -274,11 +274,13 @@ local function portaction(host, port)
-- Since the fetch_host_key functions don't indicate what failed, we could
-- waste a lot of time on e.g. tcpwrapped port 22
-- Using opencon instead of get_banner to avoid trying SSL first in some cases
local status, banner = comm.opencon(host, port, nil, {recv_before=true})
if not string.match(banner, "^SSH") then
local sock, banner = comm.opencon(host, port, nil, {recv_before=true})
if not (sock and string.match(banner, "^SSH")) then
stdnse.debug2("Banner: %s", banner)
stdnse.debug1("Service does not appear to be SSH: quitting.")
return nil
end
sock:close()
end
local output_tab = {}
local keys = {}