Siemens SCALANCE X-200RNA Switch Devices Inappropriate Encoding For Output Context (CVE-2019-6110)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(500838);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/12");

  script_cve_id("CVE-2019-6110");
  script_xref(name:"EDB-ID", value:"46193");
  script_xref(name:"GLSA", value:"GLSA-201903-16");

  script_name(english:"Siemens SCALANCE X-200RNA Switch Devices Inappropriate Encoding For Output Context (CVE-2019-6110)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-
The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files
being transferred.

  - In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious
    server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control
    codes to hide additional files being transferred. (CVE-2019-6110)

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.");
  script_set_attribute(attribute:"see_also", value:"https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-22-349-21");
  script_set_attribute(attribute:"see_also", value:"https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c");
  script_set_attribute(attribute:"see_also", value:"https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c");
  script_set_attribute(attribute:"see_also", value:"https://www.exploit-db.com/exploits/46193/");
  script_set_attribute(attribute:"see_also", value:"https://security.netapp.com/advisory/ntap-20190213-0001/");
  script_set_attribute(attribute:"see_also", value:"https://security.gentoo.org/glsa/201903-16");
  script_set_attribute(attribute:"see_also", value:"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf");
  script_set_attribute(attribute:"solution", value:
"The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original
can be found at CISA.gov.

Siemens released updates for the affected product and recommends updating to the latest version: 

- Update to V3.2.7 or later version.

Siemens identified the following specific workarounds and mitigations customers can apply to reduce the risk: 

- Restrict access to the affected systems, especially to ports 22/tcp and 443/tcp to trusted IP addresses only. 
- Deactivate the webserver if not required, and if deactivation is supported by the product.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. In
order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to
Siemens' operational guidelines for industrial security and following the recommendations in the product manuals.
Siemens provides additional information on industrial security.

For further inquiries on security vulnerabilities in Siemens products and solutions, please contact Siemens. 

For more information, see the associated Siemens security advisory SSA-412672 in HTML and CSAF.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-6110");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(838);

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/02/23");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_x204rna_eec_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:scalance_x204rna_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Siemens");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Siemens');

var asset = tenable_ot::assets::get(vendor:'Siemens');

var vuln_cpes = {
    "cpe:/o:siemens:scalance_x204rna_firmware" :
        {"versionEndExcluding" : "3.2.7", "family" : "SCALANCEX200", "orderNumbers" : ["6GK5 204-0BA00-2MB2 ","6GK5 204-0BA00-2KB2 ","6GK5 204-0BS00-2NA3","6GK5 204-0BS00-3LA3 ","6GK5 204-0BS00-3PA3 "]}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);