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Merge pull request #737 from terrafrost/limit-preg-match-1.0

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SSH2: limit the size of data that expect() looks at

* terrafrost/limit-preg-match-1.0:
  SSH2: limit the size of data that expect() looks at
This commit is contained in:
Andreas Fischer 2015-07-17 11:06:18 +02:00
commit 6a80da4c87
1 changed files with 1 additions and 1 deletions
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phpseclib/Net/SSH2.php
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@ -2670,7 +2670,7 @@ class Net_SSH2
$match = $expect; $match = $expect;
while (true) { while (true) {
if ($mode == NET_SSH2_READ_REGEX) { if ($mode == NET_SSH2_READ_REGEX) {
preg_match($expect, $this->interactiveBuffer, $matches); preg_match($expect, substr($this->interactiveBuffer, -1024), $matches);
$match = isset($matches[0]) ? $matches[0] : ''; $match = isset($matches[0]) ? $matches[0] : '';
} }
$pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false; $pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false;