Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027) - Nessus

Critical Plugin ID: 105376

This page contains detailed information about the Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 105376
Name: Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027)
Filename: palo_alto_PAN-SA-2017-0027_remote.nasl
Vulnerability Published: 2017-12-05
This Plugin Published: 2017-12-20
Last Modification Time: 2019-11-12
Plugin Version: 1.7
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: palo_alto_webui_detect.nbin
Required KB Items [?]: www/palo_alto_panos

Vulnerability Information

Severity: Critical
Vulnerability Published: 2017-12-05
Patch Published: 2017-12-05
CVE [?]: CVE-2017-15944
CPE [?]: cpe:/o:paloaltonetworks:pan-os

Synopsis

The remote PAN-OS host is affected by a remote code execution vulnerability.

Description

The Palo Alto Networks PAN-OS running on the remote host is affected by a remote code execution vulnerability in the management interface due to improper validation of user-supplied input when handling HTTP requests. An unauthenticated, remote attacker can exploit this, via a series of specially crafted requests, to cause remote code execution in the context of the highest privileged user.

Note that PAN-OS is reportedly affected by other vulnerabilities as well; however, Nessus has not tested for these.

Solution

Upgrade to Palo Alto Networks PAN-OS version 6.1.19 / 7.0.19 / 7.1.14 / 8.0.6 or later

Public Exploits

Target Network Port(s): 443
Target Asset(s): Services/www
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027) vulnerability:

Metasploit: exploit/linux/http/panos_readsessionvars
[Palo Alto Networks readSessionVarsFromFile() Session Corruption]
Exploit-DB: exploits/hardware/remote/43342.txt
[EDB-43342: Palo Alto Networks Firewalls - Root Remote Code Execution]
Exploit-DB: exploits/unix/remote/44597.rb
[EDB-44597: Palo Alto Networks - 'readSessionVarsFromFile()' Session Corruption (Metasploit)]
GitHub: https://d0n9.github.io/2018/01/26/CVE-2017-15944%20Palo%20Alto防火墙远程代码执行构造%20EXP/
[CVE-2017-15944]
GitHub: https://github.com/yukar1z0e/CVE-2017-15944
[CVE-2017-15944]
GitHub: https://github.com/surajraghuvanshi/PaloAltoRceDetectionAndExploit
[CVE-2017-15944: Detecion for the vulnerability CVE-2017-15944]
GitHub: https://github.com/xxnbyy/CVE-2017-15944-POC
[CVE-2017-15944: CVE-2017-15944 Palo Alto Networks firewalls remote root code execution POC]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2017-15944
CVSS V2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:C

CVSS Base Score:	7.5 (High)
Impact Subscore:	6.4
Exploitability Subscore:	10.0
CVSS Temporal Score:	6.2 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.2 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	9.8 (Critical)
Impact Subscore:	5.9
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.1 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.1 (Critical)

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(105376);
  script_version("1.7");
  script_cvs_date("Date: 2019/11/12");

  script_cve_id("CVE-2017-15944");
  script_bugtraq_id(102079);

  script_name(english:"Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027)");
  script_summary(english:"Checks the PAN-OS response.");

  script_set_attribute(attribute:"synopsis", value:
"The remote PAN-OS host is affected by a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Palo Alto Networks PAN-OS running on the remote host is affected
by a remote code execution vulnerability in the management interface
due to improper validation of user-supplied input when handling HTTP 
requests. An unauthenticated, remote attacker can exploit this, via
a series of specially crafted requests, to cause remote code
execution in the context of the highest privileged user. 

Note that PAN-OS is reportedly affected by other vulnerabilities as
well; however, Nessus has not tested for these.");
  script_set_attribute(attribute:"see_also", value:"https://securityadvisories.paloaltonetworks.com/Home/Detail/102");
  # https://packetstormsecurity.com/files/145396/Palo-Alto-Networks-Firewalls-Remote-Root-Code-Execution.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d516b278");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Palo Alto Networks PAN-OS version 6.1.19 / 7.0.19 / 7.1.14
/ 8.0.6 or later");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-15944");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Palo Alto Networks readSessionVarsFromFile() Session Corruption');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/20");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:paloaltonetworks:pan-os");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("palo_alto_webui_detect.nbin");
  script_require_keys("www/palo_alto_panos");
  script_require_ports("Services/www", 443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("install_func.inc");
include("http.inc");

app = 'palo_alto_panos';

# Exit if PAN-OS is not detected on the target host
get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:443, embedded:TRUE);

# Exit if PAN-OS is not detected on this port
install = get_single_install(app_name:app, port: port);

# The 'device' parameter contains an invalid char for
# the patched cms_changeDeviceContext.php.
# So the patched php script will return a different response
# than the vulnerable one.
#
# This 'device' parameter specifically causes the vulnerable server
# to return 'Invalid device location string'.
url = '/esp/cms_changeDeviceContext.esp?device=8@foo:';
res = http_send_recv3(
  method:'GET',
  item:url,
  port:port,
  exit_on_fail:TRUE
);

if(empty_or_null(res[2]))
{
  audit(AUDIT_RESP_BAD, port, "a 'cms_changeDeviceContext' request:" + ' No data in the HTTP response body.');
}

# Patched
# Validation in cms_changeDeviceContext.php fails the 'device' string.
# panmodule.so!panUserSetDeviceLocation() is not called.
# So empty string btw the second and third @s.
if('@start@@end@' >< res[2])
{
  audit(AUDIT_WEB_APP_NOT_AFFECTED, 'Palo Alto PAN-OS', build_url(qs:install['path'], port:port));
}
# Vulnerable
# cms_changeDeviceContext.php does not check the 'device' string.
# panmodule.so!panUserSetDeviceLocation() is called.
# panUserSetDeviceLocation() returns "Invalid device location string"
# So the vulnerable server would respond something like:
#
# @start@Invalid device location string: 8@foo:
# @end@
else if('Invalid device location string' >< res[2])
{
  extra = 'Nessus was able to detect the issue with the following request :\n\n' + http_last_sent_request();

  security_report_v4(
    port       : port,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
}
# Unexpected response
else
{
  audit(AUDIT_RESP_BAD, port, "a 'cms_changeDeviceContext' request." + ' Unexpected HTTP response body:\n' + res[2]);
}

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/palo_alto_PAN-SA-2017-0027_remote.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\palo_alto_PAN-SA-2017-0027_remote.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/palo_alto_PAN-SA-2017-0027_remote.nasl

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How to Run

Here is how to run the Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select CGI abuses plugin family.
On the right side table select Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027) plugin ID 105376.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl palo_alto_PAN-SA-2017-0027_remote.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a palo_alto_PAN-SA-2017-0027_remote.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - palo_alto_PAN-SA-2017-0027_remote.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state palo_alto_PAN-SA-2017-0027_remote.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

102079

See also:

Similar and related Nessus plugins:

105295 - Palo Alto Networks PAN-OS 6.1.x < 6.1.19 Multiple Vulnerabilities
105296 - Palo Alto Networks PAN-OS 7.0.x < 7.0.19 Multiple Vulnerabilities
105298 - Palo Alto Networks PAN-OS 7.1.x < 7.1.14 Multiple Vulnerabilities
104811 - Palo Alto Networks PAN-OS 8.0.x < 8.0.6 Multiple Vulnerabilities
138072 - Palo Alto Networks PAN-OS 7.1.x < 7.1.26 / 8.0.x < 8.1.13 / 8.1.x < 8.1.13 / 9.0.x < 9.0.6 Vulnerability
137880 - Palo Alto Networks PAN-OS 8.0.x < 8.1.15 / 8.1.x < 8.1.15 / 9.0.x < 9.0.9 / 9.1.x < 9.1.3 Authentication Bypass in SAML Authentication (CVE-2020-2021)
138331 - Palo Alto Networks PAN-OS 7.1.x < 8.1.15 / 9.0.x < 9.0.9 / 9.1.x < 9.1.3 GlobalProtect Command Injection Vulnerability
152523 - Palo Alto Networks PAN-OS 8.1.x < 8.1.19 / 9.0.x < 9.0.14 / 9.1.x < 9.1.10 Vulnerability
152505 - Palo Alto Networks PAN-OS 8.1.x < 8.1.19 / 9.0.x < 9.0.14 / 9.1.x < 9.1.9 / 10.0.x < 10.0.5 Vulnerability
152507 - Palo Alto Networks PAN-OS 8.1.x < 8.1.19 / 9.0.x < 9.0.14 / 9.1.x < 9.1.10 / 10.0.x < 10.0.4 Vulnerability
152506 - Palo Alto Networks PAN-OS 9.0.x < 9.0.14 / 9.1.x < 9.1.9 / 10.0.x < 10.0.5 Vulnerability
153213 - Palo Alto Networks PAN-OS 9.0.10 < 9.0.15 / 9.1.4 < 9.1.11 / 10.0.x < 10.0.8 / 10.1.x < 10.1.2 OS Command Injection
155307 - Palo Alto Networks PAN-OS 8.1.x < 8.1.17 Memory Corruption
159362 - Palo Alto Networks PAN-OS 8.1.x < 8.1.23 / 9.0.x < 9.0.16-hf / 9.1.x < 9.1.13-hf / 10.0.x < 10.0.10 / 10.1.x < 10.1.5-hf / 10.2.x < 10.2.1 Vulnerability
157876 - Palo Alto Networks PAN-OS for Panorama < 9.0.15 / 9.1.12-h3 / 10.0.8-h8 Multiple RCE (Log4Shell)
72829 - Palo Alto Networks PAN-OS 5.x < 5.0.9 Multiple Vulnerabilities
100419 - Palo Alto Networks PAN-OS 6.1.x < 6.1.17 / 7.0.x < 7.0.15 / 7.1.x < 7.1.10 / 8.0.x < 8.0.2 Multiple Vulnerabilities
101164 - Palo Alto Networks PAN-OS 6.1.x < 6.1.18 / 7.0.x < 7.0.17 / 7.1.x < 7.1.12 / 8.0.x < 8.0.3 Multiple Vulnerabilities
72827 - Palo Alto Networks PAN-OS < 4.1.13 / 5.0.x < 5.0.6 XSS
78586 - Palo Alto Networks PAN-OS < 5.0.14 / 5.1.x < 5.1.9 / 6.0.x < 6.0.4 OpenSSL MitM
78587 - Palo Alto Networks PAN-OS < 5.0.15 / 5.1.x < 5.1.10 / 6.0.x < 6.0.6 / 6.1.x < 6.1.1 Bash Shell Remote Code Execution (Shellshock)
81167 - Palo Alto Networks PAN-OS <= 5.0.15 / 6.0.x <= 6.0.8 / 6.1.x <= 6.1.2 GNU C Library (glibc) Buffer Overflow (GHOST)
122259 - Palo Alto Networks PAN-OS 6.1.x < 6.1.22 / 7.1.x < 7.1.20 / 8.0.x < 8.0.13 / 8.1.x < 8.1.5 Multiple Vulnerabilities (PAN-SA-2018-0012)
123512 - Palo Alto Networks PAN-OS 6.1.x <= 6.1.20 / 7.1.x < 7.1.21 / 8.0.x < 8.0.14 / 8.1.x < 8.1.4 Multiple Vulnerabilities (PAN-SA-2018-0015)
123079 - Palo Alto Networks < 7.1.23 / 8.0.x < 8.0.16 / 8.1.x < 8.1.7 Integer Overflow Vulnerability (PAN-SA-2019-0006)
129302 - Palo Alto Networks PAN-OS 7.1.x < 7.1.24 / 8.0.x < 8.0.19 / 8.1.x < 8.1.8-h5 / 9.0.x < 9.0.2-h4 Multiple Vulnerabilities
126787 - Palo Alto Networks PAN-OS 7.1.x < 7.1.19 / 8.0.x < 8.0.12 / 8.1.x < 8.1.3 Vulnerability
134305 - Palo Alto Networks PAN-OS 7.1 < 7.1.25 / 8.0 < 8.0.20 / 8.1 < 8.1.8 / 9.0 < 9.0.2 OpenSSL Vulnerability
148123 - Palo Alto Networks PAN-OS 7.1.x < 7.1.26 / 8.0.x < 8.0.21 / 8.1.x < 8.1.13 / 9.0.x < 9.0.7 Multiple Vulnerabilities
138037 - Palo Alto Networks PAN-OS 7.1.x < 7.1.26 / 8.0.x < 8.1.13 / 8.1.x < 8.1.13 / 9.0.x < 9.0.1 Vulnerability
136826 - Palo Alto Networks PAN-OS 7.1.x < 8.1.14 / 8.0.x < 8.1.14 / 8.1.x < 8.1.14 / 9.0.x < 9.0.7 Vulnerability

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file palo_alto_PAN-SA-2017-0027_remote.nasl version 1.7. For more plugins, visit the Nessus Plugin Library.

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Palo Alto Networks PAN-OS Management Interface RCE (PAN-SA-2017-0027) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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