Bosch Security Systems B426 Conettix Cleartext Transmission of Sensitive Information (CVE-2021-23846)

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

include('compat.inc');

if (description)
{
  script_id(501997);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/15");

  script_cve_id("CVE-2021-23846");

  script_name(english:"Bosch Security Systems B426 Conettix Cleartext Transmission of Sensitive Information (CVE-2021-23846)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"When using http protocol, the user password is transmitted as a clear
text parameter for which it is possible to be obtained by an attacker
through a MITM attack. This will be fixed starting from Firmware
version 3.11.5, which will be released on the 30th of June, 2021.

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://psirt.bosch.com/security-advisories/bosch-sa-196933-bt.html");
  script_set_attribute(attribute:"solution", value:
"The recommended approach is to update the software of affected Bosch products to a fixed version. 
If an update is not possible in a timely manner, the mitigation approaches Firewalling and IP Filtering can be utilized. 
A list of affected and fixed firmware versions is available in the 'Affected Products' section of the vendor advisory. 

It is advised that the devices should not be exposed directly to the internet or other insecure networks. 
This includes port-forwarding, which would not protect devices adequately. 
Firewalling a device significantly reduces its attack surface.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-23846");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(319);

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/06/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/06/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/14");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:bosch:b426_firmware:03.01.0004");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:bosch:b426_firmware:03.02.002");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:bosch:b426_firmware:03.03.0009");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:bosch:b426_firmware:03.05.0003");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/BoschSecuritySystems');

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

var vuln_cpes = {
    "cpe:/o:bosch:b426_firmware:03.01.0004" :
        {"versionEndIncluding" : "03.01.0004", "versionStartIncluding" : "03.01.0004", "family" : "B426"},
    "cpe:/o:bosch:b426_firmware:03.02.002" :
        {"versionEndIncluding" : "03.02.002", "versionStartIncluding" : "03.02.002", "family" : "B426"},
    "cpe:/o:bosch:b426_firmware:03.03.0009" :
        {"versionEndIncluding" : "03.03.0009", "versionStartIncluding" : "03.03.0009", "family" : "B426"},
    "cpe:/o:bosch:b426_firmware:03.05.0003" :
        {"versionEndIncluding" : "03.05.0003", "versionStartIncluding" : "03.05.0003", "family" : "B426"}
};

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