Vulnerabilities > CVE-2018-0172 - Out-of-bounds Write vulnerability in Cisco IOS and IOS XE
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
COMPLETE Summary
A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow condition on the affected device, which will cause the device to reload and result in a DoS condition. Cisco Bug IDs: CSCvg62730.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 2 | |
| Hardware | 6 |
Common Weakness Enumeration (CWE)
Nessus
NASL family CISCO NASL id CISCO-SA-20180328-DHCPR3-IOS.NASL description According to its self-reported version, the Cisco IOS software running on the remote device is affected by multiple denial of service vulnerabilities in the DHCP client implementation when parsing DHCP packets. An unauthenticated, remote attacker can exploit these issues, via specially crafted DHCP packets, to cause the device to reload. last seen 2020-06-01 modified 2020-06-02 plugin id 109087 published 2018-04-17 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109087 title Cisco IOS DHCP Multiple Vulnerabilities code #TRUSTED 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 # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(109087); script_version("1.6"); script_cvs_date("Date: 2019/11/08"); script_cve_id("CVE-2018-0172", "CVE-2018-0173", "CVE-2018-0174"); script_bugtraq_id(103545, 103552, 103554); script_xref(name:"TRA", value:"TRA-2018-06"); script_xref(name:"CISCO-BUG-ID", value:"CSCvg62730"); script_xref(name:"CISCO-BUG-ID", value:"CSCvg62754"); script_xref(name:"CISCO-BUG-ID", value:"CSCuh91645"); script_xref(name:"CISCO-SA", value:"cisco-sa-20180328-dhcpr1"); script_xref(name:"CISCO-SA", value:"cisco-sa-20180328-dhcpr2"); script_xref(name:"CISCO-SA", value:"cisco-sa-20180328-dhcpr3"); script_name(english:"Cisco IOS DHCP Multiple Vulnerabilities"); script_summary(english:"Checks the IOS version."); 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, the Cisco IOS software running on the remote device is affected by multiple denial of service vulnerabilities in the DHCP client implementation when parsing DHCP packets. An unauthenticated, remote attacker can exploit these issues, via specially crafted DHCP packets, to cause the device to reload."); # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bfe8b7e0"); # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr2 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2af6e16d"); # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr3 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?570bb167"); script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg62730"); script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg62754"); script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuh91645"); script_set_attribute(attribute:"see_also", value:"https://www.tenable.com/security/research/tra-2018-06"); script_set_attribute(attribute:"solution", value: "Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvg62730, CSCvg62754, and CSCuh91645."); 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:"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:"2018/04/17"); 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) 2018-2019 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_func.inc"); include("cisco_kb_cmd_func.inc"); flag = 0; override = 0; ver = get_kb_item_or_exit("Host/Cisco/IOS/Version"); # Check for vuln versions if ( ver == '12.2(53)SE1' || ver == '12.2(55)SE' || ver == '12.2(46)SE' || ver == '12.2(46)SE2' || ver == '12.2(50)SE2' || ver == '12.2(50)SE1' || ver == '12.2(44)SE2' || ver == '12.2(50)SE5' || ver == '12.2(44)SE1' || ver == '12.2(53)SE' || ver == '12.2(44)SE4' || ver == '12.2(55)SE3' || ver == '12.2(55)SE2' || ver == '12.2(44)SE' || ver == '12.2(52)SE' || ver == '12.2(58)SE' || ver == '12.2(50)SE3' || ver == '12.2(55)SE1' || ver == '12.2(44)SE6' || ver == '12.2(44)SE3' || ver == '12.2(53)SE2' || ver == '12.2(52)SE1' || ver == '12.2(46)SE1' || ver == '12.2(54)SE' || ver == '12.2(44)SE5' || ver == '12.2(50)SE4' || ver == '12.2(50)SE' || ver == '12.2(58)SE1' || ver == '12.2(55)SE4' || ver == '12.2(58)SE2' || ver == '12.2(55)SE5' || ver == '12.2(55)SE6' || ver == '12.2(55)SE7' || ver == '12.2(55)SE8' || ver == '12.2(55)SE9' || ver == '12.2(55)SE10' || ver == '12.2(55)SE11' || ver == '12.2(55)SE12' || ver == '12.2(55)SE13' || ver == '12.2(44)EX' || ver == '12.2(53)EX' || ver == '12.2(52)EX' || ver == '12.2(44)EX1' || ver == '12.2(55)EX' || ver == '12.2(46)EX' || ver == '12.2(52)EX1' || ver == '12.2(55)EX1' || ver == '12.2(55)EX2' || ver == '12.2(55)EX3' || ver == '12.2(58)EX' || ver == '12.2(46)EY' || ver == '12.2(55)EY' || ver == '12.2(52)EY1' || ver == '12.2(44)EY' || ver == '12.2(52)EY' || ver == '12.2(53)EY' || ver == '12.2(52)EY2' || ver == '12.2(52)EY1b' || ver == '12.2(52)EY1c' || ver == '12.2(58)EY' || ver == '12.2(52)EY3' || ver == '12.2(52)EY2a' || ver == '12.2(58)EY1' || ver == '12.2(52)EY4' || ver == '12.2(52)EY3a' || ver == '12.2(58)EY2' || ver == '12.2(58)EZ' || ver == '12.2(53)EZ' || ver == '12.2(55)EZ' || ver == '12.2(60)EZ' || ver == '12.2(60)EZ1' || ver == '12.2(60)EZ2' || ver == '12.2(60)EZ3' || ver == '12.2(60)EZ4' || ver == '12.2(60)EZ5' || ver == '12.2(60)EZ6' || ver == '12.2(60)EZ7' || ver == '12.2(60)EZ8' || ver == '12.2(60)EZ9' || ver == '12.2(60)EZ10' || ver == '12.2(60)EZ11' || ver == '12.2(60)EZ12' || ver == '12.2(50)SG3' || ver == '12.2(50)SG6' || ver == '12.2(53)SG1' || ver == '12.2(46)SG' || ver == '12.2(53)SG2' || ver == '12.2(50)SG5' || ver == '12.2(53)SG3' || ver == '12.2(50)SG8' || ver == '12.2(50)SG2' || ver == '12.2(54)SG1' || ver == '12.2(50)SG1' || ver == '12.2(52)SG' || ver == '12.2(54)SG' || ver == '12.2(50)SG' || ver == '12.2(50)SG7' || ver == '12.2(53)SG4' || ver == '12.2(50)SG4' || ver == '12.2(46)SG1' || ver == '12.2(53)SG5' || ver == '12.2(53)SG6' || ver == '12.2(53)SG7' || ver == '12.2(53)SG8' || ver == '12.2(53)SG9' || ver == '12.2(53)SG10' || ver == '12.2(53)SG11' || ver == '12.2(33)SRD7' || ver == '12.2(33)SRD6' || ver == '12.2(33)SRD2a' || ver == '12.2(33)SRD4' || ver == '12.2(33)SRD5' || ver == '12.2(33)SRD3' || ver == '12.2(33)SRD2' || ver == '12.2(33)SRD1' || ver == '12.2(33)SRD' || ver == '12.2(33)SRD8' || ver == '12.2(52)XO' || ver == '12.2(54)XO' || ver == '12.2(50)SQ2' || ver == '12.2(50)SQ1' || ver == '12.2(50)SQ' || ver == '12.2(50)SQ3' || ver == '12.2(50)SQ4' || ver == '12.2(50)SQ5' || ver == '12.2(50)SQ6' || ver == '12.2(50)SQ7' || ver == '12.2(33)SRE1' || ver == '12.2(33)SRE2' || ver == '12.2(33)SRE3' || ver == '12.2(33)SRE4' || ver == '12.2(33)SRE' || ver == '12.2(33)SRE0a' || ver == '12.2(33)SRE5' || ver == '12.2(33)SRE6' || ver == '12.2(33)SRE8' || ver == '12.2(33)SRE7' || ver == '12.2(33)SRE9' || ver == '12.2(33)SRE7a' || ver == '12.2(33)SRE10' || ver == '12.2(33)SRE11' || ver == '12.2(33)SRE9a' || ver == '12.2(33)SRE12' || ver == '12.2(33)SRE13' || ver == '12.2(33)SRE14' || ver == '12.2(33)SRE15' || ver == '12.2(33)SRE15a' || ver == '15.0(1)XO1' || ver == '15.0(1)XO' || ver == '15.0(2)XO' || ver == '15.0(1)S2' || ver == '15.0(1)S1' || ver == '15.0(1)S' || ver == '15.0(1)S3a' || ver == '15.0(1)S4' || ver == '15.0(1)S5' || ver == '15.0(1)S4a' || ver == '15.0(1)S6' || ver == '12.2(33)MRA' || ver == '12.2(33)MRB5' || ver == '12.2(33)MRB2' || ver == '12.2(33)MRB1' || ver == '12.2(33)MRB4' || ver == '12.2(33)MRB' || ver == '12.2(33)MRB3' || ver == '12.2(33)MRB6' || ver == '15.2(1)S' || ver == '15.2(2)S' || ver == '15.2(1)S1' || ver == '15.2(4)S' || ver == '15.2(1)S2' || ver == '15.2(2)S1' || ver == '15.2(2)S2' || ver == '15.2(2)S0a' || ver == '15.2(2)S0c' || ver == '15.2(4)S1' || ver == '15.2(4)S4' || ver == '15.2(4)S6' || ver == '15.2(4)S2' || ver == '15.2(4)S5' || ver == '15.2(4)S3' || ver == '15.2(4)S3a' || ver == '15.2(4)S4a' || ver == '15.2(4)S7' || ver == '15.0(1)EY' || ver == '15.0(1)EY1' || ver == '15.0(1)EY2' || ver == '15.0(2)EY' || ver == '15.0(2)EY1' || ver == '15.0(2)EY2' || ver == '15.0(2)EY3' || ver == '12.2(54)WO' || ver == '15.1(2)S' || ver == '15.1(1)S' || ver == '15.1(1)S1' || ver == '15.1(3)S' || ver == '15.1(1)S2' || ver == '15.1(2)S1' || ver == '15.1(2)S2' || ver == '15.1(3)S1' || ver == '15.1(3)S0a' || ver == '15.1(3)S2' || ver == '15.1(3)S4' || ver == '15.1(3)S3' || ver == '15.1(3)S5' || ver == '15.1(3)S6' || ver == '15.1(3)S5a' || ver == '15.0(1)SE' || ver == '15.0(2)SE' || ver == '15.0(1)SE1' || ver == '15.0(1)SE2' || ver == '15.0(1)SE3' || ver == '15.0(2)SE1' || ver == '15.0(2)SE2' || ver == '15.0(2)SE3' || ver == '15.0(2)SE4' || ver == '15.0(2)SE5' || ver == '15.0(2)SE6' || ver == '15.0(2)SE7' || ver == '15.0(2)SE8' || ver == '15.0(2)SE9' || ver == '15.0(2a)SE9' || ver == '15.0(2)SE10' || ver == '15.0(2)SE11' || ver == '15.0(2)SE10a' || ver == '15.0(2)SE12' || ver == '15.1(1)SG' || ver == '15.1(2)SG' || ver == '15.1(1)SG1' || ver == '15.1(1)SG2' || ver == '15.1(2)SG1' || ver == '15.1(2)SG2' || ver == '15.1(2)SG3' || ver == '15.1(2)SG4' || ver == '15.1(2)SG5' || ver == '15.1(2)SG6' || ver == '15.1(2)SG7' || ver == '15.1(2)SG8' || ver == '15.1(2)SG8a' || ver == '15.0(1)MR' || ver == '15.0(2)MR' || ver == '15.0(2)SG' || ver == '15.0(2)SG1' || ver == '15.0(2)SG2' || ver == '15.0(2)SG3' || ver == '15.0(2)SG4' || ver == '15.0(2)SG5' || ver == '15.0(2)SG6' || ver == '15.0(2)SG7' || ver == '15.0(2)SG8' || ver == '15.0(2)SG9' || ver == '15.0(2)SG10' || ver == '15.0(2)SG11' || ver == '15.1(1)MR' || ver == '15.1(1)MR1' || ver == '15.1(1)MR2' || ver == '15.1(1)MR3' || ver == '15.1(3)MR' || ver == '15.1(1)MR4' || ver == '15.0(1)EX' || ver == '15.0(2)EX' || ver == '15.0(2)EX1' || ver == '15.0(2)EX2' || ver == '15.0(2)EX3' || ver == '15.0(2)EX4' || ver == '15.0(2)EX5' || ver == '15.0(2)EX8' || ver == '15.0(2a)EX5' || ver == '15.0(2)EX10' || ver == '15.0(2)EX11' || ver == '15.0(2)EX13' || ver == '15.0(2)EX12' || ver == '15.1(2)EY' || ver == '15.1(2)EY1a' || ver == '15.1(2)EY2' || ver == '15.1(2)EY3' || ver == '15.1(2)EY2a' || ver == '15.1(2)EY4' || ver == '15.1(2)SNG' || ver == '15.3(1)S' || ver == '15.3(2)S' || ver == '15.3(3)S' || ver == '15.3(1)S2' || ver == '15.3(1)S1' || ver == '15.3(2)S2' || ver == '15.3(2)S1' || ver == '15.3(3)S1' || ver == '15.3(3)S2' || ver == '15.3(3)S3' || ver == '15.3(3)S6' || ver == '15.3(3)S4' || ver == '15.3(3)S1a' || ver == '15.3(3)S5' || ver == '15.3(3)S7' || ver == '15.3(3)S8' || ver == '15.3(3)S9' || ver == '15.3(3)S10' || ver == '15.3(3)S8a' || ver == '15.1(2)SNH' || ver == '15.1(2)SNI' || ver == '15.1(2)SNI1' || ver == '15.2(2)SNG' || ver == '15.0(2)EC' || ver == '15.0(2)EB' || ver == '15.2(1)E' || ver == '15.2(2)E' || ver == '15.2(1)E1' || ver == '15.2(3)E' || ver == '15.2(1)E2' || ver == '15.2(1)E3' || ver == '15.2(2)E1' || ver == '15.2(4)E' || ver == '15.2(3)E1' || ver == '15.2(2)E2' || ver == '15.2(2a)E1' || ver == '15.2(2)E3' || ver == '15.2(2a)E2' || ver == '15.2(3)E2' || ver == '15.2(3a)E' || ver == '15.2(3)E3' || ver == '15.2(3m)E2' || ver == '15.2(4)E1' || ver == '15.2(2)E4' || ver == '15.2(2)E5' || ver == '15.2(4)E2' || ver == '15.2(4m)E1' || ver == '15.2(3)E4' || ver == '15.2(5)E' || ver == '15.2(4)E3' || ver == '15.2(2)E6' || ver == '15.2(5a)E' || ver == '15.2(5)E1' || ver == '15.2(5b)E' || ver == '15.2(4m)E3' || ver == '15.2(3m)E8' || ver == '15.2(2)E5a' || ver == '15.2(5c)E' || ver == '15.2(3)E5' || ver == '15.2(2)E5b' || ver == '15.2(4n)E2' || ver == '15.2(4o)E2' || ver == '15.2(5a)E1' || ver == '15.2(4)E4' || ver == '15.2(2)E7' || ver == '15.2(5)E2' || ver == '15.2(4p)E1' || ver == '15.2(6)E' || ver == '15.2(5)E2b' || ver == '15.2(4)E5' || ver == '15.2(5)E2c' || ver == '15.2(2)E8' || ver == '15.2(4m)E2' || ver == '15.2(4o)E3' || ver == '15.2(4q)E1' || ver == '15.2(6)E0a' || ver == '15.2(6)E0b' || ver == '15.2(2)E7b' || ver == '15.2(4)E5a' || ver == '15.2(6)E0c' || ver == '15.2(2)E9' || ver == '15.1(3)MRA' || ver == '15.1(3)MRA1' || ver == '15.1(3)MRA2' || ver == '15.1(3)MRA3' || ver == '15.1(3)MRA4' || ver == '15.2(2)SNH1' || ver == '15.0(2)ED' || ver == '15.0(2)ED1' || ver == '15.4(1)S' || ver == '15.4(2)S' || ver == '15.4(3)S' || ver == '15.4(1)S1' || ver == '15.4(1)S2' || ver == '15.4(2)S1' || ver == '15.4(1)S3' || ver == '15.4(3)S1' || ver == '15.4(2)S2' || ver == '15.4(3)S2' || ver == '15.4(3)S3' || ver == '15.4(1)S4' || ver == '15.4(2)S3' || ver == '15.4(2)S4' || ver == '15.4(3)S4' || ver == '15.4(3)S5' || ver == '15.4(3)S6' || ver == '15.4(3)S7' || ver == '15.4(3)S6a' || ver == '15.4(3)S8' || ver == '15.2(2)SNI' || ver == '15.0(2)EZ' || ver == '15.2(1)EY' || ver == '15.0(2)EJ' || ver == '15.0(2)EJ1' || ver == '15.0(2)EH' || ver == '15.2(5)EX' || ver == '15.0(2)EK' || ver == '15.0(2)EK1' || ver == '15.5(1)S' || ver == '15.5(2)S' || ver == '15.5(1)S1' || ver == '15.5(3)S' || ver == '15.5(1)S2' || ver == '15.5(1)S3' || ver == '15.5(2)S1' || ver == '15.5(2)S2' || ver == '15.5(3)S1' || ver == '15.5(3)S1a' || ver == '15.5(2)S3' || ver == '15.5(3)S2' || ver == '15.5(3)S0a' || ver == '15.5(3)S3' || ver == '15.5(1)S4' || ver == '15.5(2)S4' || ver == '15.5(3)S4' || ver == '15.5(3)S5' || ver == '15.5(3)S6' || ver == '15.5(3)S6a' || ver == '15.5(3)S6b' || ver == '15.1(3)SVG' || ver == '15.2(2)EB' || ver == '15.2(2)EB1' || ver == '15.2(2)EB2' || ver == '15.5(3)SN' || ver == '15.0(2)SQD' || ver == '15.0(2)SQD1' || ver == '15.0(2)SQD2' || ver == '15.0(2)SQD3' || ver == '15.0(2)SQD4' || ver == '15.0(2)SQD5' || ver == '15.0(2)SQD6' || ver == '15.0(2)SQD7' || ver == '15.6(1)S' || ver == '15.6(2)S' || ver == '15.6(2)S1' || ver == '15.6(1)S1' || ver == '15.6(1)S2' || ver == '15.6(2)S0a' || ver == '15.6(2)S2' || ver == '15.6(1)S3' || ver == '15.6(2)S3' || ver == '15.6(1)S4' || ver == '15.6(2)S4' || ver == '15.6(2)SP' || ver == '15.6(2)SP1' || ver == '15.6(2)SP2' || ver == '15.6(2)SP3' || ver == '15.6(2)SP3b' || ver == '15.6(2)SN' || ver == '15.1(3)SVJ2' || ver == '15.2(4)EC1' || ver == '15.2(4)EC2' ) flag++; cmds = make_list(); if (flag && get_kb_item("Host/local_checks_enabled")) { flag = 0; buf = cisco_command_kb_item("Host/Cisco/Config/show running-config | include ip helper-address", "show running-config | include ip helper-address"); if (check_cisco_result(buf)) { if (preg(string:buf, pattern:"ip helper-address", multiline:TRUE)) { cmds = make_list(cmds, "show running-config | include ip helper-address"); buf2 = cisco_command_kb_item("Host/Cisco/Config/show running-config | include ip dhcp relay information option", "show running-config | include ip dhcp relay information option"); if (check_cisco_result(buf2)) { if (preg(multiline:TRUE, pattern:"ip dhcp relay information option", string:buf2)) { cmds = make_list(cmds,"show running-config | include ip dhcp relay information option"); flag = 1; } } } } else if (cisco_needs_enable(buf)) override = 1; if (!flag && !override) audit(AUDIT_OS_CONF_NOT_VULN, "Cisco IOS", ver); } if (flag || override) { security_report_cisco( port : 0, severity : SECURITY_HOLE, override : override, version : ver, bug_id : "CSCvg62730, CSCvg62754, CSCuh91645", cmds : cmds ); exit(0); } else audit(AUDIT_HOST_NOT, "affected");NASL family CISCO NASL id CISCO-SA-20180328-DHCPR3-IOSXE.NASL description According to its self-reported version, the Cisco IOS software running on the remote device is affected by multiple denial of service vulnerabilities in the DHCP client implementation when parsing DHCP packets. An unauthenticated, remote attacker can exploit these issues, via specially crafted DHCP packets, to cause the device to reload. last seen 2020-06-01 modified 2020-06-02 plugin id 109088 published 2018-04-17 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109088 title Cisco IOS DHCP Multiple Vulnerabilities
References
- http://www.securityfocus.com/bid/103552
- http://www.securitytracker.com/id/1040591
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1
- https://www.tenable.com/security/research/tra-2018-06