CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/SC:N/VI:N/SI:N/VA:H/SA:N
AI Score
Confidence
High
Affected devices are using a predictable IP ID sequence number. This leaves the system susceptible to a family of attacks which rely on the use of predictable IP ID sequence numbers as their base method of attack and eventually could allow an attacker to create a denial-of-service condition.
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(502296);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/04");
script_cve_id("CVE-2024-35292");
script_xref(name:"ICSA", value:"24-165-02");
script_name(english:"Siemens SIMATIC S7-200 SMART Devices Use of Insufficiently Random Values (CVE-2024-35292)");
script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"Affected devices are using a predictable IP ID sequence number.
This leaves the system susceptible to a family of attacks which
rely on the use of predictable IP ID sequence numbers as their
base method of attack and eventually could allow an attacker to
create a denial-of-service condition.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
# https://cert-portal.siemens.com/productcert/html/ssa-481506.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a2de15e9");
script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-24-165-02");
script_set_attribute(attribute:"solution", value:
"Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:
- Restrict access to the network where the affected products are located by introducing strict access control mechanisms");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:T/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-35292");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(330);
script_set_attribute(attribute:"vuln_publication_date", value:"2024/06/11");
script_set_attribute(attribute:"patch_publication_date", value:"2024/06/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/07/22");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_st20_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_st30_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_st40_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_st60_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr20_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr30_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr40_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr60_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_cr40_firmware");
script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:simatic_s7-200_smart_cpu_cr60_firmware");
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/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:simatic_s7-200_smart_cpu_st20_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1ST20-0AA0","6ES7288-1ST20-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_st30_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1ST30-0AA0","6ES7288-1ST30-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_st40_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1ST40-0AA0","6ES7288-1ST40-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_st60_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1ST60-0AA0","6ES7288-1ST60-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr20_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1SR20-0AA0","6ES7288-1SR20-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr30_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1SR30-0AA0","6ES7288-1SR30-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr40_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1SR40-0AA0","6ES7288-1SR40-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_sr60_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1SR60-0AA0","6ES7288-1SR60-0AA1"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_cr40_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1CR40-0AA0"]},
"cpe:/o:siemens:simatic_s7-200_smart_cpu_cr60_firmware" :
{"family" : "S7200", "orderNumbers" : ["6ES7288-1CR60-0AA0"]}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_HOLE);
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/SC:N/VI:N/SI:N/VA:H/SA:N
AI Score
Confidence
High