Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability - Nessus

High Plugin ID: 119888

This page contains detailed information about the Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability 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: 119888
Name: Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability
Filename: cisco_webex_meetings_win_33_6_4.nasl
Vulnerability Published: 2018-10-24
This Plugin Published: 2018-12-27
Last Modification Time: 2021-04-07
Plugin Version: 1.7
Plugin Type: local
Plugin Family: CGI abuses
Dependencies: cisco_webex_meetings_win_installed.nbin
Required KB Items [?]: installed_sw/Cisco Webex Meetings, Settings/ParanoidReport

Vulnerability Information

Severity: High
Vulnerability Published: 2018-10-24
Patch Published: 2018-11-27
CVE [?]: CVE-2018-15442
CPE [?]: cpe:/a:cisco:webex_meetings

Synopsis

The remote host contains an application affected by a command injection vulnerability.

Description

The version of Cisco Webex Desktop App installed on the remote host is prior to 33.6.4, and thus, is affected by a command injection vulnerability.

Solution

Upgrade to Cisco Webex Desktop App 33.6.4 or later.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability vulnerability:

Metasploit: exploit/windows/smb/webexec
[WebExec Authenticated User Code Execution]
Metasploit: auxiliary/admin/smb/webexec_command
[WebEx Remote Command Execution Utility]
Metasploit: exploit/windows/local/webexec
[WebEx Local Service Permissions Exploit]
Exploit-DB: exploits/windows/local/45696.rb
[EDB-45696: WebEx - Local Service Permissions Exploit (Metasploit)]
Exploit-DB: exploits/windows/remote/45695.rb
[EDB-45695: WebExec - (Authenticated) User Code 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 Score Source [?]: CVE-2018-15442
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	7.2 (High)
Impact Subscore:	10.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	6.0 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.0 (Medium)

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

CVSS Base Score:	7.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.8
CVSS Temporal Score:	7.2 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.2 (High)

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Plugin Source

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

include('compat.inc');

if (description)
{
  script_id(119888);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/07");

  script_cve_id("CVE-2018-15442");
  script_bugtraq_id(105734);

  script_name(english:"Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability");

  script_set_attribute(attribute:"synopsis", value:
"The remote host contains an application affected by a command
injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Cisco Webex Desktop App installed on the remote host
is prior to 33.6.4, and thus, is affected by a command injection 
vulnerability.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181024-webex-injection
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b3d7e129");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Cisco Webex Desktop App 33.6.4 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/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-2018-15442");

  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:'WebExec Authenticated User Code Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:webex_meetings");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_webex_meetings_win_installed.nbin");
  script_require_keys("installed_sw/Cisco Webex Meetings", "Settings/ParanoidReport");

  exit(0);
}

include("audit.inc");
include("vcf.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);

app_name = "Cisco Webex Meetings";

app_info = vcf::get_app_info(app:app_name);

vcf::check_granularity(app_info:app_info, sig_segments:3);

constraints = [
  { "min_version": "1.0.0",  "fixed_version" : "33.6.4" }
];

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/cisco_webex_meetings_win_33_6_4.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\cisco_webex_meetings_win_33_6_4.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/cisco_webex_meetings_win_33_6_4.nasl

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How to Run

Here is how to run the Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability 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 Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability plugin ID 119888.
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 cisco_webex_meetings_win_33_6_4.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a cisco_webex_meetings_win_33_6_4.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - cisco_webex_meetings_win_33_6_4.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 cisco_webex_meetings_win_33_6_4.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

105734

See also:

Similar and related Nessus plugins:

133078 - Cisco DCNM Authentication Bypass (CVE-2019-15977)
81980 - Cisco Prime Security Manager Network Time Protocol Daemon (ntpd) Multiple Vulnerabilities (cisco-sa-20141222-ntpd)
121395 - Cisco Small Business RV320 and RV325 Routers Information Disclosure Vulnerability (cisco-sa-20190123-rv-info) (remote check)
78828 - Cisco Prime Security Manager GNU Bash Environment Variable Handling Command Injection (cisco-sa-20140926-bash) (Shellshock)
56485 - Cisco Unified Operations Manager < 8.6 Multiple Vulnerabilities

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file cisco_webex_meetings_win_33_6_4.nasl version 1.7. For more plugins, visit the Nessus Plugin Library.

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Cisco Webex Meetings Desktop App < 33.6.4 Command Injection Vulnerability - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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