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phorge/src/applications/config/check/PhabricatorSecuritySetupCheck.php
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PhabricatorSecuritySetupCheck.php
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<?php
final class PhabricatorSecuritySetupCheck extends PhabricatorSetupCheck {
public function getDefaultGroup() {
return self::GROUP_OTHER;
}
protected function executeChecks() {
// This checks for a version of bash with the "Shellshock" vulnerability.
// For details, see T6185.
$payload = array(
'SHELLSHOCK_PAYLOAD' => '() { :;} ; echo VULNERABLE',
);
list($err, $stdout) = id(new ExecFuture('echo shellshock-test'))
->setEnv($payload, $wipe_process_env = true)
->resolve();
if (!$err && preg_match('/VULNERABLE/', $stdout)) {
$summary = pht(
'This system has an unpatched version of Bash with a severe, widely '.
'disclosed vulnerability.');
$message = pht(
'The version of %s on this system is out of date and contains a '.
'major, widely disclosed vulnerability (the "Shellshock" '.
'vulnerability).'.
"\n\n".
'Upgrade %s to a patched version.'.
"\n\n".
'To learn more about how this issue affects Phabricator, see %s.',
phutil_tag('tt', array(), 'bash'),
phutil_tag('tt', array(), 'bash'),
phutil_tag(
'a',
array(
'href' => 'https://secure.phabricator.com/T6185',
'target' => '_blank',
),
pht('T6185 "Shellshock" Bash Vulnerability')));
$this
->newIssue('security.shellshock')
->setName(pht('Severe Security Vulnerability: Unpatched Bash'))
->setSummary($summary)
->setMessage($message);
}
$file_key = 'security.alternate-file-domain';
$file_domain = PhabricatorEnv::getEnvConfig($file_key);
if (!$file_domain) {
$doc_href = PhabricatorEnv::getDoclink('Configuring a File Domain');
$this->newIssue('security.'.$file_key)
->setName(pht('Alternate File Domain Not Configured'))
->setSummary(
pht(
'Increase security (and improve performance) by configuring '.
'a CDN or alternate file domain.'))
->setMessage(
pht(
'Phabricator is currently configured to serve user uploads '.
'directly from the same domain as other content. This is a '.
'security risk.'.
"\n\n".
'Configure a CDN (or alternate file domain) to eliminate this '.
'risk. Using a CDN will also improve performance. See the '.
'guide below for instructions.'))
->addPhabricatorConfig($file_key)
->addLink(
$doc_href,
pht('Configuration Guide: Configuring a File Domain'));
}
}
}

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