CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
82.5%
Hirschmann HiOS 07.1.01, 07.1.02, and 08.1.00 through 08.5.xx and HiSecOS 03.3.00 through 03.5.01 allow remote attackers to change the credentials of existing users.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(502264);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/11");
script_cve_id("CVE-2021-27734");
script_name(english:"Hirschmann HiOS Switches Improper Authentication (CVE-2021-27734)");
script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"Hirschmann HiOS 07.1.01, 07.1.02, and 08.1.00 through 08.5.xx and
HiSecOS 03.3.00 through 03.5.01 allow remote attackers to change the
credentials of existing users.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
# https://dam.belden.com/dmm3bwsv3/assetstream.aspx?assetid=12914&mediaformatid=50063&destinationid=10016
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4917ec80");
script_set_attribute(attribute:"solution", value:
"Refer to 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:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-27734");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(287);
script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/17");
script_set_attribute(attribute:"patch_publication_date", value:"2021/05/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/10");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:belden:hirschmann_hios");
script_set_attribute(attribute:"cpe", value:"cpe:/o:belden:hirschmann_hios:07.1.01");
script_set_attribute(attribute:"cpe", value:"cpe:/o:belden:hirschmann_hios:07.1.02");
script_set_attribute(attribute:"cpe", value:"cpe:/o:belden:hisecos");
script_set_attribute(attribute:"generated_plugin", value:"former");
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/Hirschmann");
exit(0);
}
include('tenable_ot_cve_funcs.inc');
get_kb_item_or_exit('Tenable.ot/Hirschmann');
var asset = tenable_ot::assets::get(vendor:'Hirschmann');
var vuln_cpes = {
"cpe:/o:belden:hirschmann_hios" :
{"versionEndExcluding" : "08.6.00", "versionStartIncluding" : "08.1.00", "family" : "Hirschmann"},
"cpe:/o:belden:hisecos" :
{"versionEndIncluding" : "03.5.01", "versionStartIncluding" : "03.3.00", "family" : "Hirschmann"},
"cpe:/o:belden:hirschmann_hios:07.1.02" :
{"versionEndIncluding" : "07.1.02", "versionStartIncluding" : "07.1.02", "family" : "Hirschmann"},
"cpe:/o:belden:hirschmann_hios:07.1.01" :
{"versionEndIncluding" : "07.1.01", "versionStartIncluding" : "07.1.01", "family" : "Hirschmann"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_HOLE);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
82.5%