CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
99.7%
Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.
An analysis for SPRECON-E systems lead to the result, that only FALCON (PU244x) and T3 MC33/34 product series are affected.
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(501750);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/04");
script_cve_id("CVE-2019-11478");
script_xref(name:"RHSA", value:"RHSA-2019:1594");
script_xref(name:"RHSA", value:"RHSA-2019:1602");
script_xref(name:"RHSA", value:"RHSA-2019:1699");
script_xref(name:"CEA-ID", value:"CEA-2019-0456");
script_name(english:"Sprecher Automation SPRECON-E TCP SACK PANIC (CVE-2019-11478)");
script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"Jonathan Looney discovered that the TCP retransmission queue
implementation in tcp_fragment in the Linux kernel could be fragmented
when handling certain TCP Selective Acknowledgment (SACK) sequences. A
remote attacker could use this to cause a denial of service. This has
been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127,
4.19.52, 5.1.11, and is fixed in commit
f070ef2ac66716357066b683fb0baf55f8191a2e.
An analysis for SPRECON-E systems lead to the result, that only
FALCON (PU244x) and T3 MC33/34 product series are affected.
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
# https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?774b082f");
# https://www.cert.at/de/warnungen/2019/6/warnungen-20190618
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?27335f5c");
# https://www.sprecher-automation.com/en/it-security/security-alerts
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?178ab433");
script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/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-2019-11478");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(400);
script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/19");
script_set_attribute(attribute:"patch_publication_date", value:"2019/06/19");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/03");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:sprecher-automation:sprecon-e:8.64b");
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) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("tenable_ot_api_integration.nasl");
script_require_keys("Tenable.ot/SprecherAutomation");
exit(0);
}
include('tenable_ot_cve_funcs.inc');
get_kb_item_or_exit('Tenable.ot/SprecherAutomation');
var asset = tenable_ot::assets::get(vendor:'SprecherAutomation');
var vuln_cpes = {
"cpe:/o:sprecher-automation:sprecon-e:8.64b" :
{"versionEndExcluding" : "8.64b", "family" : "SPRECONE"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
99.7%