7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
52.3%
According to its self-reported version, Cisco IOS Software is affected by a vulnerability in the processing of IP Service Level Agreement (SLA) packets by Cisco IOS Software and Cisco IOS software, which could allow an unauthenticated, remote attacker to cause an interface wedge and an eventual denial of service (DoS) condition on the affected device. The vulnerability is due to improper socket resources handling in the IP SLA responder application code. An attacker could exploit this vulnerability by sending crafted IP SLA packets to an affected device. An exploit could allow the attacker to cause an interface to become wedged, resulting in an eventual denial of service (DoS) condition on the affected device.
Please see the included Cisco BIDs and Cisco Security Advisory for more information
#TRUSTED 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
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(130092);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/29");
script_cve_id("CVE-2019-1737");
script_bugtraq_id(107604);
script_xref(name:"CISCO-BUG-ID", value:"CSCvf37838");
script_xref(name:"CISCO-SA", value:"cisco-sa-20190327-ipsla-dos");
script_name(english:"Cisco IOS Software IP Service Level Agreement Denial of Service Vulnerability");
script_summary(english:"Checks the version of Cisco IOS Software");
script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch");
script_set_attribute(attribute:"description", value:
"According to its self-reported version, Cisco IOS Software is affected by a vulnerability
in the processing of IP Service Level Agreement (SLA) packets by Cisco IOS Software and Cisco
IOS software, which could allow an unauthenticated, remote attacker to cause an interface
wedge and an eventual denial of service (DoS) condition on the affected device. The vulnerability
is due to improper socket resources handling in the IP SLA responder application code. An attacker
could exploit this vulnerability by sending crafted IP SLA packets to an affected device. An exploit
could allow the attacker to cause an interface to become wedged, resulting in an eventual denial of
service (DoS) condition on the affected device.
Please see the included Cisco BIDs and Cisco Security Advisory for more information");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-ipsla-dos
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?74b82563");
script_set_attribute(attribute:"see_also", value:"http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-71135");
script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvf37838");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvf37838");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
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:C/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-2019-1737");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(400);
script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/27");
script_set_attribute(attribute:"patch_publication_date", value:"2019/03/27");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/21");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:ios");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CISCO");
script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("cisco_ios_version.nasl");
script_require_keys("Host/Cisco/IOS/Version");
exit(0);
}
include('audit.inc');
include('cisco_workarounds.inc');
include('ccf.inc');
product_info = cisco::get_product_info(name:'Cisco IOS');
version_list=make_list(
'12.2(58)EX',
'12.2(58)EZ',
'12.2(60)EZ',
'12.2(60)EZ1',
'12.2(60)EZ2',
'12.2(60)EZ3',
'12.2(60)EZ4',
'12.2(60)EZ5',
'12.2(60)EZ6',
'12.2(60)EZ7',
'12.2(60)EZ8',
'12.2(60)EZ9',
'12.2(60)EZ10',
'12.2(60)EZ11',
'12.2(60)EZ12',
'12.2(60)EZ13',
'15.2(2)S',
'15.2(4)S',
'15.2(2)S1',
'15.2(2)S2',
'15.2(2)S0a',
'15.2(2)S0c',
'15.2(2)S0d',
'15.2(4)S1',
'15.2(4)S4',
'15.2(4)S6',
'15.2(4)S2',
'15.2(4)S5',
'15.2(4)S3',
'15.2(4)S0c',
'15.2(4)S1c',
'15.2(4)S3a',
'15.2(4)S4a',
'15.2(4)S7',
'15.2(4)S8',
'15.3(1)T',
'15.3(2)T',
'15.3(1)T1',
'15.3(1)T2',
'15.3(1)T3',
'15.3(1)T4',
'15.3(2)T1',
'15.3(2)T2',
'15.3(2)T3',
'15.3(2)T4',
'15.0(2)EY',
'15.0(2)EY1',
'15.0(2)EY2',
'15.0(2)EY3',
'15.0(2)SE',
'15.0(2)SE1',
'15.0(2)SE2',
'15.0(2)SE3',
'15.0(2)SE4',
'15.0(2)SE5',
'15.0(2)SE6',
'15.0(2)SE7',
'15.0(2)SE8',
'15.0(2)SE9',
'15.0(2a)SE9',
'15.0(2)SE10',
'15.0(2)SE11',
'15.0(2)SE10a',
'15.1(2)SG',
'15.1(2)SG1',
'15.1(2)SG2',
'15.1(2)SG3',
'15.1(2)SG4',
'15.1(2)SG5',
'15.1(2)SG6',
'15.1(2)SG7',
'15.1(2)SG8',
'15.2(4)M',
'15.2(4)M1',
'15.2(4)M2',
'15.2(4)M4',
'15.2(4)M3',
'15.2(4)M5',
'15.2(4)M8',
'15.2(4)M10',
'15.2(4)M7',
'15.2(4)M6',
'15.2(4)M9',
'15.2(4)M6b',
'15.2(4)M6a',
'15.2(4)M11',
'15.0(1)EX',
'15.0(2)EX',
'15.0(2)EX1',
'15.0(2)EX2',
'15.0(2)EX3',
'15.0(2)EX4',
'15.0(2)EX5',
'15.0(2)EX6',
'15.0(2)EX7',
'15.0(2)EX8',
'15.0(2a)EX5',
'15.0(2)EX10',
'15.0(2)EX11',
'15.0(2)EX13',
'15.0(2)EX12',
'15.2(3)GC',
'15.2(3)GC1',
'15.2(4)GC',
'15.2(4)GC1',
'15.2(4)GC2',
'15.2(4)GC3',
'15.1(1)SY',
'15.1(1)SY1',
'15.1(2)SY',
'15.1(2)SY1',
'15.1(2)SY2',
'15.1(1)SY2',
'15.1(1)SY3',
'15.1(2)SY3',
'15.1(1)SY4',
'15.1(1)SY5',
'15.1(1)SY6',
'15.1(2)SY6',
'15.1(2)SY7',
'15.1(2)SY8',
'15.1(2)SY9',
'15.1(2)SY10',
'15.1(2)SY11',
'15.3(1)S',
'15.3(2)S',
'15.3(3)S',
'15.3(1)S2',
'15.3(1)S1',
'15.3(2)S2',
'15.3(2)S1',
'15.3(1)S1e',
'15.3(3)S1',
'15.3(3)S2',
'15.3(3)S3',
'15.3(3)S6',
'15.3(3)S4',
'15.3(3)S1a',
'15.3(3)S5',
'15.3(3)S2a',
'15.3(3)S7',
'15.3(3)S8',
'15.3(3)S6a',
'15.3(3)S9',
'15.3(3)S10',
'15.3(3)S8a',
'15.4(1)T',
'15.4(2)T',
'15.4(1)T2',
'15.4(1)T1',
'15.4(1)T3',
'15.4(2)T1',
'15.4(2)T3',
'15.4(2)T2',
'15.4(1)T4',
'15.4(2)T4',
'15.2(1)E',
'15.2(2)E',
'15.2(1)E1',
'15.2(3)E',
'15.2(1)E2',
'15.2(1)E3',
'15.2(2)E1',
'15.2(2b)E',
'15.2(4)E',
'15.2(3)E1',
'15.2(2)E2',
'15.2(2a)E1',
'15.2(2)E3',
'15.2(2a)E2',
'15.2(3)E2',
'15.2(3a)E',
'15.2(3)E3',
'15.2(3m)E2',
'15.2(4)E1',
'15.2(2)E4',
'15.2(2)E5',
'15.2(4)E2',
'15.2(4m)E1',
'15.2(3)E4',
'15.2(5)E',
'15.2(3m)E7',
'15.2(4)E3',
'15.2(2)E6',
'15.2(5)E1',
'15.2(5b)E',
'15.2(4m)E3',
'15.2(3m)E8',
'15.2(2)E5a',
'15.2(3)E5',
'15.2(2)E5b',
'15.2(4n)E2',
'15.2(4o)E2',
'15.2(5a)E1',
'15.2(4)E4',
'15.2(2)E7',
'15.2(5)E2',
'15.2(4p)E1',
'15.2(6)E',
'15.2(5)E2b',
'15.2(4)E5',
'15.2(5)E2c',
'15.2(4m)E2',
'15.2(4o)E3',
'15.2(4q)E1',
'15.2(6)E0a',
'15.2(6)E0b',
'15.2(2)E7b',
'15.2(4)E5a',
'15.2(6)E0c',
'15.2(4s)E1',
'15.2(4s)E2',
'15.4(1)S',
'15.4(2)S',
'15.4(3)S',
'15.4(1)S1',
'15.4(1)S2',
'15.4(2)S1',
'15.4(1)S3',
'15.4(3)S1',
'15.4(2)S2',
'15.4(3)S2',
'15.4(3)S3',
'15.4(1)S4',
'15.4(2)S3',
'15.4(2)S4',
'15.4(3)S0d',
'15.4(3)S4',
'15.4(3)S0e',
'15.4(3)S5',
'15.4(3)S0f',
'15.4(3)S6',
'15.4(3)S7',
'15.4(3)S6a',
'15.4(3)S8',
'15.3(3)M',
'15.3(3)M1',
'15.3(3)M2',
'15.3(3)M3',
'15.3(3)M5',
'15.3(3)M4',
'15.3(3)M6',
'15.3(3)M7',
'15.3(3)M8',
'15.3(3)M9',
'15.3(3)M10',
'15.3(3)M8a',
'15.0(2)EZ',
'15.2(1)SC1a',
'15.2(2)SC',
'15.2(2)SC1',
'15.2(2)SC3',
'15.2(2)SC4',
'15.2(1)EY',
'15.0(2)EJ',
'15.0(2)EJ1',
'15.2(1)SY',
'15.2(1)SY1',
'15.2(1)SY0a',
'15.2(1)SY2',
'15.2(2)SY',
'15.2(1)SY1a',
'15.2(2)SY1',
'15.2(2)SY2',
'15.2(1)SY3',
'15.2(1)SY4',
'15.2(2)SY3',
'15.2(1)SY5',
'15.4(3)M',
'15.4(3)M1',
'15.4(3)M2',
'15.4(3)M4',
'15.4(3)M5',
'15.4(3)M6',
'15.4(3)M7',
'15.4(3)M6a',
'15.4(3)M7a',
'15.4(3)M8',
'15.2(1)SD1',
'15.2(1)SD2',
'15.2(1)SD3',
'15.2(1)SD4',
'15.2(1)SD6',
'15.2(1)SD6a',
'15.2(1)SD7',
'15.2(1)SD8',
'15.2(4)JAZ1',
'15.0(2)EK',
'15.0(2)EK1',
'15.3(3)XB12',
'15.4(1)CG',
'15.4(1)CG1',
'15.4(2)CG',
'15.5(1)S',
'15.5(2)S',
'15.5(1)S1',
'15.5(3)S',
'15.5(1)S2',
'15.5(1)S3',
'15.5(2)S1',
'15.5(2)S2',
'15.5(3)S1',
'15.5(3)S1a',
'15.5(2)S3',
'15.5(3)S2',
'15.5(3)S0a',
'15.5(3)S3',
'15.5(1)S4',
'15.5(2)S4',
'15.5(3)S4',
'15.5(3)S5',
'15.5(3)S6',
'15.5(3)S6a',
'15.5(3)S6b',
'15.2(2)EB',
'15.2(2)EB1',
'15.2(2)EB2',
'15.5(2)T',
'15.5(1)T3',
'15.5(2)T1',
'15.5(2)T2',
'15.5(2)T3',
'15.5(2)T4',
'15.5(1)T4',
'15.2(2)EA',
'15.2(2)EA1',
'15.2(2)EA2',
'15.2(3)EA',
'15.2(4)EA',
'15.2(4)EA1',
'15.2(2)EA3',
'15.2(4)EA3',
'15.2(5)EA',
'15.2(4)EA4',
'15.2(4)EA2',
'15.2(4)EA5',
'15.2(4)EA6',
'15.4(2)SN',
'15.4(2)SN1',
'15.4(3)SN1',
'15.4(3)SN1a',
'15.5(3)M',
'15.5(3)M1',
'15.5(3)M0a',
'15.5(3)M2',
'15.5(3)M2a',
'15.5(3)M3',
'15.5(3)M4',
'15.5(3)M4a',
'15.5(3)M5',
'15.5(3)M4b',
'15.5(3)M4c',
'15.5(3)M6',
'15.5(3)M5a',
'15.5(3)M6a',
'15.3(3)JAA1',
'15.5(1)SN',
'15.5(1)SN1',
'15.5(2)SN',
'15.5(3)SN0a',
'15.5(3)SN',
'15.6(1)S',
'15.6(2)S',
'15.6(2)S1',
'15.6(1)S1',
'15.6(1)S2',
'15.6(2)S0a',
'15.6(2)S2',
'15.6(1)S3',
'15.6(2)S3',
'15.6(1)S4',
'15.6(2)S4',
'15.6(1)T',
'15.6(2)T',
'15.6(1)T0a',
'15.6(1)T1',
'15.6(2)T1',
'15.6(1)T2',
'15.6(2)T0a',
'15.6(2)T2',
'15.6(1)T3',
'15.6(2)T3',
'15.3(1)SY',
'15.3(0)SY',
'15.3(1)SY1',
'15.3(1)SY2',
'15.3(1)SY3',
'15.6(2)SP',
'15.6(2)SP1',
'15.6(2)SP2',
'15.6(2)SP3b',
'15.6(1)SN',
'15.6(1)SN1',
'15.6(2)SN',
'15.6(1)SN2',
'15.6(1)SN3',
'15.6(3)SN',
'15.6(4)SN',
'15.6(5)SN',
'15.6(6)SN',
'15.6(7)SN',
'15.6(7)SN1',
'15.6(3)M',
'15.6(3)M1',
'15.6(3)M0a',
'15.6(3)M1a',
'15.6(3)M1b',
'15.6(3)M2',
'15.6(3)M2a',
'15.6(3)M3',
'15.6(3)M3a',
'15.2(4)EC1',
'15.2(4)EC2',
'15.4(1)SY',
'15.4(1)SY1',
'15.4(1)SY2',
'15.4(1)SY3',
'15.5(1)SY',
'15.7(3)M',
'15.7(3)M0a'
);
workarounds = make_list(CISCO_WORKAROUNDS['generic_workaround']);
workaround_params = WORKAROUND_CONFIG['ip_sla'];
reporting = make_array(
'port' , product_info['port'],
'severity' , SECURITY_HOLE,
'version' , product_info['version'],
'bug_id' , 'CSCvf37838'
);
cisco::check_and_report(
product_info:product_info,
workarounds:workarounds,
workaround_params:workaround_params,
reporting:reporting,
vuln_versions:version_list
);
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
52.3%