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SSH2: fix issue with key re-exchange

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This commit is contained in:
terrafrost 2021-05-15 22:22:14 -05:00
parent 9a7cfafc8d
commit 8204273978
1 changed files with 5 additions and 2 deletions
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7
phpseclib/Net/SSH2.php
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@ -1368,6 +1368,7 @@ class Net_SSH2
function _key_exchange($kexinit_payload_server = false)
{
$preferred = $this->preferred;
$send_kex = true;
$kex_algorithms = isset($preferred['kex']) ?
$preferred['kex'] :
@ -1451,7 +1452,7 @@ class Net_SSH2
0
);
if ($this->send_kex_first) {
if ($kexinit_payload_server === false) {
if (!$this->_send_binary_packet($kexinit_payload_client)) {
return false;
}
@ -1467,6 +1468,8 @@ class Net_SSH2
user_error('Expected SSH_MSG_KEXINIT');
return false;
}
$send_kex = false;
}
$response = $kexinit_payload_server;
@ -1539,7 +1542,7 @@ class Net_SSH2
extract(unpack('Cfirst_kex_packet_follows', $this->_string_shift($response, 1)));
$first_kex_packet_follows = $first_kex_packet_follows != 0;
if (!$this->send_kex_first && !$this->_send_binary_packet($kexinit_payload_client)) {
if ($send_kex && !$this->_send_binary_packet($kexinit_payload_client)) {
return false;
}