Vulnerabilities > CVE-2018-0179 - Unspecified vulnerability in Cisco IOS

CVSS 5.9 - MEDIUM

Attack vector

NETWORK

Attack complexity

HIGH

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

high complexity

cisco

nessus

NVD

Published: 2018-03-28

Updated: 2024-07-24

Summary

Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition. These vulnerabilities affect Cisco devices that are running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later. Cisco Bug IDs: CSCuy32360, CSCuz60599.

Vulnerable Configurations

Part	Description	Count
OS	Cisco Cisco IOS 15.3\(00.00.19\)Sy Cisco IOS 15.4\(01\)Ia001.100 Cisco IOS 15.6\(01.22\)T Cisco IOS 15.4\(03\)M4.1 Cisco IOS 15.4\(2\)Cg Cisco IOS 15.4\(2\)T Cisco IOS 15.4\(3\)M	7
Hardware	Cisco Cisco 3925 Integrated Services Router - Cisco 3925E Integrated Services Router - Cisco 3945 Integrated Services Router - Cisco 3945E Integrated Services Router - Cisco 1000 Integrated Services Router - Cisco 1100 4G/6G Integrated Services Router - Cisco 1100 4G Integrated Services Router - Cisco 1100 4Gltegb Integrated Services Router - Cisco 1100 4Gltena Integrated Services Router - Cisco 1100 4P Integrated Services Router - Cisco 1100 6G Integrated Services Router - Cisco 1100 8P Integrated Services Router - Cisco 1100 LTE Integrated Services Router - Cisco 1100 Integrated Services Router - Cisco 1101 4P Integrated Services Router - Cisco 1101 Integrated Services Router - Cisco 1109 2P Integrated Services Router - Cisco 1109 4P Integrated Services Router - Cisco 1109 Integrated Services Router - Cisco 1111X 8P Integrated Services Router - Cisco 1111X Integrated Services Router - Cisco 111X Integrated Services Router - Cisco 1120 Integrated Services Router - Cisco 1131 Integrated Services Router - Cisco 1160 Integrated Services Router - Cisco 1801 Integrated Service Router - Cisco 1802 Integrated Service Router - Cisco 1803 Integrated Service Router - Cisco 1811 Integrated Service Router - Cisco 1812 Integrated Service Router - Cisco 1841 Integrated Service Router - Cisco 1861 Integrated Service Router - Cisco 1905 Integrated Services Router - Cisco 1906C Integrated Services Router - Cisco 1921 Integrated Services Router - Cisco 1941 Integrated Services Router - Cisco 1941W Integrated Services Router - Cisco 4000 Integrated Services Router - Cisco 422 Integrated Services Router - Cisco 4221 Integrated Services Router - Cisco 4321/K9 RF Integrated Services Router - Cisco 4321/K9 WS Integrated Services Router - Cisco 4321/K9 Integrated Services Router - Cisco 4321 Integrated Services Router - Cisco 4331/K9 RF Integrated Services Router - Cisco 4331/K9 WS Integrated Services Router - Cisco 4331/K9 Integrated Services Router - Cisco 4331 Integrated Services Router - Cisco 4351/K9 RF Integrated Services Router - Cisco 4351/K9 WS Integrated Services Router - Cisco 4351/K9 Integrated Services Router - Cisco 4431 Integrated Services Router - Cisco 44461 Integrated Services Router - Cisco 4451 X Integrated Services Router - Cisco 4451 Integrated Services Router - Cisco 4461 Integrated Services Router - Cisco 8101 32Fh - Cisco 8101 32H - Cisco 8102 64H - Cisco 8201 - Cisco 8201 32Fh - Cisco 8202 - Cisco 8208 - Cisco 8212 - Cisco 8218 - Cisco 8800 12 Slot - Cisco 8800 18 Slot - Cisco 8800 4 Slot - Cisco 8800 8 Slot - Cisco 8804 - Cisco 8808 - Cisco 8812 - Cisco 8818 - Cisco 8831 - Cisco ASR 1000 - Cisco ASR 1000 Esp100 - Cisco ASR 1000 Esp100 X - Cisco ASR 1000 Esp200 X - Cisco ASR 1000 X - Cisco ASR 1001 - Cisco ASR 1001 HX - Cisco ASR 1001 HX R - Cisco ASR 1001 X - Cisco ASR 1001 X R - Cisco ASR 1002 - Cisco ASR 1002 HX - Cisco ASR 1002 HX R - Cisco ASR 1002 X - Cisco ASR 1002 X R - Cisco ASR 1004 - Cisco ASR 1006 - Cisco ASR 1006 X - Cisco ASR 1009 X - Cisco ASR 1013 - Cisco ASR 1023 - Cisco Catalyst 3650 - Cisco Catalyst 3650 12X48Fd E - Cisco Catalyst 3650 12X48Fd L - Cisco Catalyst 3650 12X48Fd S - Cisco Catalyst 3650 12X48Uq - Cisco Catalyst 3650 12X48Uq E - Cisco Catalyst 3650 12X48Uq L - Cisco Catalyst 3650 12X48Uq S - Cisco Catalyst 3650 12X48Ur - Cisco Catalyst 3650 12X48Ur E - Cisco Catalyst 3650 12X48Ur L - Cisco Catalyst 3650 12X48Ur S - Cisco Catalyst 3650 12X48Uz - Cisco Catalyst 3650 12X48Uz E - Cisco Catalyst 3650 12X48Uz L - Cisco Catalyst 3650 12X48Uz S - Cisco Catalyst 3650 24Pd - Cisco Catalyst 3650 24Pd E - Cisco Catalyst 3650 24Pd L - Cisco Catalyst 3650 24Pd S - Cisco Catalyst 3650 24Pdm - Cisco Catalyst 3650 24Pdm E - Cisco Catalyst 3650 24Pdm L - Cisco Catalyst 3650 24Pdm S - Cisco Catalyst 3650 24Ps E - Cisco Catalyst 3650 24Ps L - Cisco Catalyst 3650 24Ps S - Cisco Catalyst 3650 24Td E - Cisco Catalyst 3650 24Td L - Cisco Catalyst 3650 24Td S - Cisco Catalyst 3650 24Ts E - Cisco Catalyst 3650 24Ts L - Cisco Catalyst 3650 24Ts S - Cisco Catalyst 3650 48Fd E - Cisco Catalyst 3650 48Fd L - Cisco Catalyst 3650 48Fd S - Cisco Catalyst 3650 48Fq - Cisco Catalyst 3650 48Fq E - Cisco Catalyst 3650 48Fq L - Cisco Catalyst 3650 48Fq S - Cisco Catalyst 3650 48Fqm - Cisco Catalyst 3650 48Fqm E - Cisco Catalyst 3650 48Fqm L - Cisco Catalyst 3650 48Fqm S - Cisco Catalyst 3650 48Fs E - Cisco Catalyst 3650 48Fs L - Cisco Catalyst 3650 48Fs S - Cisco Catalyst 3650 48Pd E - Cisco Catalyst 3650 48Pd L - Cisco Catalyst 3650 48Pd S - Cisco Catalyst 3650 48Pq E - Cisco Catalyst 3650 48Pq L - Cisco Catalyst 3650 48Pq S - Cisco Catalyst 3650 48Ps E - Cisco Catalyst 3650 48Ps L - Cisco Catalyst 3650 48Ps S - Cisco Catalyst 3650 48Td E - Cisco Catalyst 3650 48Td L - Cisco Catalyst 3650 48Td S - Cisco Catalyst 3650 48Tq E - Cisco Catalyst 3650 48Tq L - Cisco Catalyst 3650 48Tq S - Cisco Catalyst 3650 48Ts E - Cisco Catalyst 3650 48Ts L - Cisco Catalyst 3650 48Ts S - Cisco Catalyst 3650 8X24Pd E - Cisco Catalyst 3650 8X24Pd L - Cisco Catalyst 3650 8X24Pd S - Cisco Catalyst 3650 8X24Uq - Cisco Catalyst 3650 8X24Uq E - Cisco Catalyst 3650 8X24Uq L - Cisco Catalyst 3650 8X24Uq S - Cisco Catalyst 3850 - Cisco Catalyst 3850 12S E - Cisco Catalyst 3850 12S S - Cisco Catalyst 3850 12X48U - Cisco Catalyst 3850 12Xs E - Cisco Catalyst 3850 12Xs S - Cisco Catalyst 3850 16Xs E - Cisco Catalyst 3850 16Xs S - Cisco Catalyst 3850 24P E - Cisco Catalyst 3850 24P L - Cisco Catalyst 3850 24P S - Cisco Catalyst 3850 24Pw S - Cisco Catalyst 3850 24S E - Cisco Catalyst 3850 24S S - Cisco Catalyst 3850 24T E - Cisco Catalyst 3850 24T L - Cisco Catalyst 3850 24T S - Cisco Catalyst 3850 24U - Cisco Catalyst 3850 24U E - Cisco Catalyst 3850 24U L - Cisco Catalyst 3850 24U S - Cisco Catalyst 3850 24Xs - Cisco Catalyst 3850 24Xs E - Cisco Catalyst 3850 24Xs S - Cisco Catalyst 3850 24Xu - Cisco Catalyst 3850 24Xu E - Cisco Catalyst 3850 24Xu L - Cisco Catalyst 3850 24Xu S - Cisco Catalyst 3850 32Xs E - Cisco Catalyst 3850 32Xs S - Cisco Catalyst 3850 48F E - Cisco Catalyst 3850 48F L - Cisco Catalyst 3850 48F S - Cisco Catalyst 3850 48P E - Cisco Catalyst 3850 48P L - Cisco Catalyst 3850 48P S - Cisco Catalyst 3850 48Pw S - Cisco Catalyst 3850 48T E - Cisco Catalyst 3850 48T L - Cisco Catalyst 3850 48T S - Cisco Catalyst 3850 48U - Cisco Catalyst 3850 48U E - Cisco Catalyst 3850 48U L - Cisco Catalyst 3850 48U S - Cisco Catalyst 3850 48Xs - Cisco Catalyst 3850 48Xs E - Cisco Catalyst 3850 48Xs F E - Cisco Catalyst 3850 48Xs F S - Cisco Catalyst 3850 48Xs S - Cisco Catalyst 3850 NM 2 40G - Cisco Catalyst 3850 NM 8 10G - Cisco Catalyst 8200 - Cisco Catalyst 8300 - Cisco Catalyst 8300 1N1S 4T2X - Cisco Catalyst 8300 1N1S 6T - Cisco Catalyst 8300 2N2S 4T2X - Cisco Catalyst 8300 2N2S 6T - Cisco Catalyst 8500 - Cisco Catalyst 8500 4QC - Cisco Catalyst 8500L - Cisco Catalyst 8510Csr - Cisco Catalyst 8510Msr - Cisco Catalyst 8540Csr - Cisco Catalyst 8540Msr - Cisco Catalyst 9200 - Cisco Catalyst 9200Cx - Cisco Catalyst 9200L - Cisco Catalyst 9300 - Cisco Catalyst 9300 24P A - Cisco Catalyst 9300 24P E - Cisco Catalyst 9300 24S A - Cisco Catalyst 9300 24S E - Cisco Catalyst 9300 24T A - Cisco Catalyst 9300 24T E - Cisco Catalyst 9300 24U A - Cisco Catalyst 9300 24U E - Cisco Catalyst 9300 24Ux A - Cisco Catalyst 9300 24Ux E - Cisco Catalyst 9300 48P A - Cisco Catalyst 9300 48P E - Cisco Catalyst 9300 48S A - Cisco Catalyst 9300 48S E - Cisco Catalyst 9300 48T A - Cisco Catalyst 9300 48T E - Cisco Catalyst 9300 48U A - Cisco Catalyst 9300 48U E - Cisco Catalyst 9300 48Un A - Cisco Catalyst 9300 48Un E - Cisco Catalyst 9300 48Uxm A - Cisco Catalyst 9300 48Uxm E - Cisco Catalyst 9300L - Cisco Catalyst 9300L 24P 4G A - Cisco Catalyst 9300L 24P 4G E - Cisco Catalyst 9300L 24P 4X A - Cisco Catalyst 9300L 24P 4X E - Cisco Catalyst 9300L 24T 4G A - Cisco Catalyst 9300L 24T 4G E - Cisco Catalyst 9300L 24T 4X A - Cisco Catalyst 9300L 24T 4X E - Cisco Catalyst 9300L 48P 4G A - Cisco Catalyst 9300L 48P 4G E - Cisco Catalyst 9300L 48P 4X A - Cisco Catalyst 9300L 48P 4X E - Cisco Catalyst 9300L 48T 4G A - Cisco Catalyst 9300L 48T 4G E - Cisco Catalyst 9300L 48T 4X A - Cisco Catalyst 9300L 48T 4X E - Cisco Catalyst 9300L Stack - Cisco Catalyst 9300Lm - Cisco Catalyst 9300X - Cisco Catalyst 9400 - Cisco Catalyst 9407R - Cisco Catalyst 9410R - Cisco Catalyst 9500 - Cisco Catalyst 9500H - Cisco Catalyst 9600 - Cisco Catalyst 9600X - Cisco Catalyst 9800 - Cisco Catalyst 9800 40 - Cisco Catalyst 9800 80 - Cisco Catalyst 9800 CL - Cisco Catalyst 9800 L - Cisco Catalyst 9800 L C - Cisco Catalyst 9800 L F - Cisco Catalyst Ie3300 Rugged Switch - Cisco Catalyst Ie3400 Heavy Duty Switch - Cisco Catalyst Ie3400 Rugged Switch - Cisco Cloud Services Router 1000V - Cisco ESR 6300 CON K9 - Cisco ESR 6300 NCP K9 - Cisco Integrated Services Virtual Router -	298

Nessus

NASL family	CISCO
NASL id	CISCO-SA-20180328-SLOGIN.NASL
description	According to its self-reported version, Cisco IOS Software is affected by two denial of service (DoS) vulnerabilities the Login Enhancements (Login Block) feature due to an attempt to free an area of memory that has not been previously allocated. An unauthenticated, remote attacker can trigger a reload of an affected device, resulting in a DoS condition as follows: - By attempting to log in to an affected device via Secure Shell (SSH) or Telnet with invalid credentials multiple times. (CVE-2018-0179) - By attempting to log in to an affected device via Secure Shell (SSH) or Telnet with invalid credentials multiple times while the administrator modifies the
last seen	2020-06-01
modified	2020-06-02
plugin id	131951
published	2019-12-11
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/131951
title	Nessus script CISCO-SA-20180328-SLOGIN.NASL
code	#TRUSTED 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 # # (C) Tenable Network Security, Inc. # include('compat.inc'); if (description) { script_id(131951); script_version("1.4"); script_cvs_date("Date: 2019/12/16"); script_cve_id("CVE-2018-0179", "CVE-2018-0180"); script_bugtraq_id(103556); script_xref(name:"CISCO-BUG-ID", value:"CSCuy32360"); script_xref(name:"CISCO-BUG-ID", value:"CSCuz60599"); script_xref(name:"CISCO-SA", value:"cisco-sa-20180328-slogin"); script_name(english:"Cisco IOS Software Login Enhancements Login Block Multiple DoS Vulnerabilities (cisco-sa-20180328-slogin)"); 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 two denial of service (DoS) vulnerabilities the Login Enhancements (Login Block) feature due to an attempt to free an area of memory that has not been previously allocated. An unauthenticated, remote attacker can trigger a reload of an affected device, resulting in a DoS condition as follows: - By attempting to log in to an affected device via Secure Shell (SSH) or Telnet with invalid credentials multiple times. (CVE-2018-0179) - By attempting to log in to an affected device via Secure Shell (SSH) or Telnet with invalid credentials multiple times while the administrator modifies the 'login block-for' configuration. (CVE-2018-0180) Please see the included Cisco BIDs and Cisco Security Advisory for more information. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number."); # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-slogin script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9aa14dc5"); script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuy32360"); script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuz60599"); script_set_attribute(attribute:"solution", value: "Upgrade to the relevant fixed version referenced in Cisco bug ID(s) CSCuy32360 and CSCuz60599."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:H/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-2018-0180"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/28"); script_set_attribute(attribute:"patch_publication_date", value:"2018/03/28"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/11"); script_set_attribute(attribute:"potential_vulnerability", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); 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 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("cisco_ios_version.nasl"); script_require_keys("Host/Cisco/IOS/Version", "Settings/ParanoidReport"); exit(0); } include('cisco_workarounds.inc'); include('ccf.inc'); include('audit.inc'); if (report_paranoia < 2) audit(AUDIT_PARANOID); product_info = cisco::get_product_info(name:'Cisco IOS'); version = product_info['version']; if (version !~ '(^\|[^0-9])15.5' \|\| 'm' >!< tolower(version)) audit(AUDIT_HOST_NOT, 'affected'); # Only need to check for login block-for, as the other BID covers fewer versions (<15.5(3)M3) and is a config check on # login block-for and something else (login quiet-mode access-class) vuln_ranges = [{'min_ver' : '15.5', 'fix_ver' : '15.5(3)M6'}]; # CSCuz60599, login block-for workarounds = make_list(CISCO_WORKAROUNDS['ios_login_block-for']); workaround_params = make_list(); reporting = make_array( 'port' , 0, 'severity' , SECURITY_WARNING, 'version' , product_info['version'], 'bug_id' , 'CSCuy32360, CSCuz60599', 'cmds' , make_list('show login') ); cisco::check_and_report( product_info:product_info, workarounds:workarounds, reporting:reporting, vuln_ranges:vuln_ranges, workaround_params:workaround_params );

Summary

Vulnerable Configurations

Nessus

References