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Add passphrase support for privatekeys in ssh-publickey-acceptance

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This commit is contained in:
dmiller
2017-09-08 18:10:17 +00:00
parent e400493b30
commit aa18e592db
3 changed files with 6 additions and 7 deletions
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7
nselib/libssh2-utility.lua
View File

@@ -95,7 +95,7 @@ function SSHConnection:password_auth (username, password)
end end
--- ---
-- Attempts to authenticate using provided publickey. -- Attempts to authenticate using provided private key.
-- --
-- @param username A username to authenticate as. -- @param username A username to authenticate as.
-- @param privatekey_file A path to a privatekey. -- @param privatekey_file A path to a privatekey.
@@ -105,10 +105,7 @@ function SSHConnection:publickey_auth (username, privatekey_file, passphrase)
if not self.session then if not self.session then
return false return false
end end
print(self.session) if libssh2.userauth_publickey(self.session, username, privatekey_file, passphrase or "") then
print(username)
print(privatekey_file)
if libssh2.userauth_publickey(self.session, username, privatekey_file, passphrase) then
self.authenticated = true self.authenticated = true
return true return true
else else

2
nselib/libssh2.luadoc
View File

@@ -52,7 +52,7 @@ function userauth_password(session, username, password)
-- @param publickeyfile File containing publickey. Not necessary if libssh2 is -- @param publickeyfile File containing publickey. Not necessary if libssh2 is
-- compiled against OpenSSL -- compiled against OpenSSL
-- @return true/false, depending on success -- @return true/false, depending on success
function userauth_publickey(session, username, privatekeyfile, passphrase publickeyfile) function userauth_publickey(session, username, privatekeyfile, passphrase, publickeyfile)
--- Read publickey from id_*.pub type key file --- Read publickey from id_*.pub type key file
-- @param publickeyfile File containing publickey -- @param publickeyfile File containing publickey

4
scripts/ssh-publickey-acceptance.nse
View File

@@ -30,6 +30,7 @@ authentication.
-- |_ Key ./id_rsa1 accepted for user root -- |_ Key ./id_rsa1 accepted for user root
-- --
-- @args ssh.privatekeys Table containing filenames of privatekeys to test -- @args ssh.privatekeys Table containing filenames of privatekeys to test
-- @args ssh.passphrases Table containing passphrases for each private key
-- @args ssh.publickeys Table containing filenames of publickkeys to test -- @args ssh.publickeys Table containing filenames of publickkeys to test
-- @args ssh.usernames Table containing usernames to check -- @args ssh.usernames Table containing usernames to check
-- @args knownbad If specified, check if keys from publickeydb are accepted -- @args knownbad If specified, check if keys from publickeydb are accepted
@@ -40,6 +41,7 @@ license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"auth", "intrusive"} categories = {"auth", "intrusive"}
local privatekeys = stdnse.get_script_args "ssh.privatekeys" local privatekeys = stdnse.get_script_args "ssh.privatekeys"
local passphrases = stdnse.get_script_args "ssh.passphrases" or {}
local usernames = stdnse.get_script_args "ssh.usernames" local usernames = stdnse.get_script_args "ssh.usernames"
local knownbad = stdnse.get_script_args "known-bad" local knownbad = stdnse.get_script_args "known-bad"
local publickeys = stdnse.get_script_args "ssh.publickeys" local publickeys = stdnse.get_script_args "ssh.publickeys"
@@ -92,7 +94,7 @@ function action (host, port)
for j = 1, #usernames do for j = 1, #usernames do
for i = 1, #privatekeys do for i = 1, #privatekeys do
stdnse.debug("Checking key: " .. privatekeys[i] .. " for user " .. usernames[j]) stdnse.debug("Checking key: " .. privatekeys[i] .. " for user " .. usernames[j])
if not helper:publickey_auth(usernames[j], privatekeys[i], "") then if not helper:publickey_auth(usernames[j], privatekeys[i], passphrases[i] or "") then
helper:disconnect() helper:disconnect()
stdnse.verbose "Failed to authenticate" stdnse.verbose "Failed to authenticate"
helper:connect(host, port) helper:connect(host, port)