nginx ngx_http_proxy_module.c Multiple Vulnerabilities - Nessus

Critical Plugin ID: 66672

This page contains detailed information about the nginx ngx_http_proxy_module.c Multiple Vulnerabilities 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: 66672
Name: nginx ngx_http_proxy_module.c Multiple Vulnerabilities
Filename: nginx_1_5_0.nasl
Vulnerability Published: 2013-05-07
This Plugin Published: 2013-05-29
Last Modification Time: 2022-04-11
Plugin Version: 1.20
Plugin Type: combined
Plugin Family: Web Servers
Dependencies: nginx_detect.nasl, nginx_nix_installed.nbin
Required KB Items [?]: installed_sw/nginx

Vulnerability Information

Severity: Critical
Vulnerability Published: 2013-05-07
Patch Published: 2013-05-07
CVE [?]: CVE-2013-2028, CVE-2013-2070
CPE [?]: cpe:/a:nginx:nginx

Synopsis

The remote web server is affected by multiple vulnerabilities.

Description

According to its Server response header, the installed version of nginx is 1.1.4 through 1.2.8, 1.3.x, or 1.4.x prior to 1.4.1. It is, therefore, affected by multiple vulnerabilities :

- A stack-based buffer overflow in 'ngx_http_parse.c' may allow a remote attacker to execute arbitrary code or trigger a denial of service condition via a specially crafted HTTP request. This vulnerability only affects versions greater than or equal to 1.3.9 and less than 1.4.1. (CVE-2013-2028)

- A memory disclosure vulnerability in 'ngx_http_parse.c' affects servers that use 'proxy_pass' to untrusted upstream servers. This issue can be triggered by a remote attacker via a specially crafted HTTP request. Failed attempts may result in a denial of service condition. (CVE-2013-2070)

Solution

Either apply the patch manually or upgrade to nginx 1.4.1 / 1.5.0 or later.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, Immunity Canvas, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the nginx ngx_http_proxy_module.c Multiple Vulnerabilities vulnerability:

Metasploit: exploit/linux/http/nginx_chunked_size
[Nginx HTTP Server 1.3.9-1.4.0 Chunked Encoding Stack Buffer Overflow]
Exploit-DB: exploits/linux/dos/25499.py
[EDB-25499: Nginx 1.3.9 < 1.4.0 - Denial of Service (PoC)]
Exploit-DB: exploits/linux/remote/25775.rb
[EDB-25775: Nginx 1.3.9 < 1.4.0 - Chuncked Encoding Stack Buffer Overflow (Metasploit)]
Exploit-DB: exploits/linux_x86/remote/26737.pl
[EDB-26737: Nginx 1.3.9/1.4.0 (x86) - Brute Force]
Exploit-DB: exploits/linux_x86-64/remote/32277.txt
[EDB-32277: Nginx 1.4.0 (Generic Linux x64) - Remote Overflow]
GitHub: https://github.com/camel-clarkson/non-controlflow-hijacking-datasets
[CVE-2013-2028]
GitHub: https://github.com/danghvu/nginx-1.4.0
[CVE-2013-2028: For the analysis of CVE-2013-2028]
GitHub: https://github.com/jptr218/nginxhack
[CVE-2013-2028: A CVE-2013-2028 implementation]
GitHub: https://github.com/kitctf/nginxpwn
[CVE-2013-2028: Exploitation Training -- CVE-2013-2028: Nginx Stack Based Buffer Overflow]
GitHub: https://github.com/m4drat/CVE-2013-2028-Exploit
[CVE-2013-2028: CVE-2013-2028 python exploit]
GitHub: https://github.com/mambroziak/docker-cve-2013-2028
[CVE-2013-2028: Dockerfile to build cve-2013-2028 container with centos6 and nginx]
GitHub: https://github.com/mertsarica/hack4career
[CVE-2013-2028]
GitHub: https://github.com/offensive-security/exploitdb-bin-sploits/blob/master/bin-sploits/32277.tgz
[EDB-32277]
GitHub: https://github.com/tachibana51/CVE-2013-2028-x64-bypass-ssp-and-pie-PoC
[CVE-2013-2028: This is not stable]
Immunity Canvas: CANVAS

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-2013-2028
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

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(66672);
  script_version("1.20");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2013-2028", "CVE-2013-2070");
  script_bugtraq_id(59699, 59824);
  script_xref(name:"EDB-ID", value:"25499");
  script_xref(name:"EDB-ID", value:"26737");
  script_xref(name:"EDB-ID", value:"32277");

  script_name(english:"nginx ngx_http_proxy_module.c Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its Server response header, the installed version of nginx
is 1.1.4 through 1.2.8, 1.3.x, or 1.4.x prior to 1.4.1.  It
is, therefore, affected by multiple vulnerabilities :

  - A stack-based buffer overflow in 'ngx_http_parse.c' may
    allow a remote attacker to execute arbitrary code or
    trigger a denial of service condition via a specially
    crafted HTTP request. This vulnerability only affects
    versions greater than or equal to 1.3.9 and less than
    1.4.1. (CVE-2013-2028)

  - A memory disclosure vulnerability in 'ngx_http_parse.c'
    affects servers that use 'proxy_pass' to untrusted
    upstream servers.  This issue can be triggered by a
    remote attacker via a specially crafted HTTP request.
    Failed attempts may result in a denial of service
    condition. (CVE-2013-2070)");
  script_set_attribute(attribute:"see_also", value:"http://nginx.org/en/security_advisories.html");
  script_set_attribute(attribute:"see_also", value:"http://mailman.nginx.org/pipermail/nginx-announce/2013/000112.html");
  script_set_attribute(attribute:"see_also", value:"http://mailman.nginx.org/pipermail/nginx-announce/2013/000114.html");
  script_set_attribute(attribute:"solution", value:
"Either apply the patch manually or upgrade to nginx 1.4.1 / 1.5.0 or
later.");
  script_set_attribute(attribute:"agent", value:"unix");
  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-2013-2028");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Nginx HTTP Server 1.3.9-1.4.0 Chunked Encoding Stack Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/05/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/05/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/05/29");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:nginx:nginx");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2013-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("nginx_detect.nasl", "nginx_nix_installed.nbin");
  script_require_keys("installed_sw/nginx");

  exit(0);
}

include('http.inc');
include('vcf.inc');

appname = 'nginx';
get_install_count(app_name:appname, exit_if_zero:TRUE);
app_info = vcf::combined_get_app_info(app:appname);

vcf::check_all_backporting(app_info:app_info);

vcf::check_granularity(app_info:app_info, sig_segments:3);
# If the detection is only remote, Detection Method won't be set, and we should require paranoia
if (empty_or_null(app_info['Detection Method']) && report_paranoia < 2)
  audit(AUDIT_PARANOID);


constraints = [
  {'min_version':'1.1.4', 'max_version':'1.2.8', 'fixed_display':'1.4.1 / 1.5.0'},
  {'min_version':'1.3.0', 'fixed_version' : '1.4.1'}
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/nginx_1_5_0.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\nginx_1_5_0.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/nginx_1_5_0.nasl

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How to Run

Here is how to run the nginx ngx_http_proxy_module.c Multiple Vulnerabilities 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 Web Servers plugin family.
On the right side table select nginx ngx_http_proxy_module.c Multiple Vulnerabilities plugin ID 66672.
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 nginx_1_5_0.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a nginx_1_5_0.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - nginx_1_5_0.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 nginx_1_5_0.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

59699, 59824

See also:

Similar and related Nessus plugins:

66387 - Fedora 19 : nginx-1.4.1-1.fc19 (2013-7560)
66341 - FreeBSD : nginx -- multiple vulnerabilities (efaa4071-b700-11e2-b1b9-f0def16c5c1b)
70310 - GLSA-201310-04 : nginx: Multiple vulnerabilities
107262 - nginx < 0.7.64 / 0.8.x < 0.8.23 Multiple Vulnerabilities
118150 - nginx < 1.10.1 / 1.11.x < 1.11.1 Denial-of-Service Vulnerability
105359 - nginx < 1.13.3 Integer Overflow Vulnerability
118151 - nginx Data Disclosure Vulnerability
118956 - nginx 1.x < 1.14.1 / 1.15.x < 1.15.6 Multiple Vulnerabilities
127907 - nginx 1.9.5 < 1.16.1 / 1.17.x < 1.17.3 Multiple Vulnerabilities
134220 - nginx < 1.17.7 Information Disclosure
73894 - nginx 1.5.10 SPDY Memory Corruption
73519 - nginx < 1.4.7 / 1.5.12 SPDY Heap Buffer Overflow
71117 - nginx < 1.4.4 / 1.5.7 ngx_parse_http Security Bypass
150154 - nginx 0.6.x < 1.20.1 1-Byte Memory Overwrite RCE
122612 - nginx <= 1.3.13 Insecure Log Permissions
41608 - nginx HTTP Request Multiple Vulnerabilities

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file nginx_1_5_0.nasl version 1.20. For more plugins, visit the Nessus Plugin Library.

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nginx ngx_http_proxy_module.c Multiple Vulnerabilities - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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