Cisco Ios Improper Input Validation

high Tenable.ot Plugin ID 500155
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Description

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 the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuh91645.

Solution

Refer to vendor advisory for Security Updates

See Also

http://www.securityfocus.com/bid/103554

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-dhcpr3

https://www.tenable.com/security/research/tra-2018-06

Plugin Details

Severity: High

ID: 500155

Version: 1.0

Type: local

Family: SCADA

Published: 11/8/2019

Updated: 11/8/2019

Risk Information

CVSS Score Source: CVE-2018-0174

CVSS v2

Risk Factor: High

Base Score: 7.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3

Risk Factor: High

Base Score: 8.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:2.3:o:cisco:ios:12.2\(33\)sre7a:*:*:*:*:*:*:*, cpe:2.3:o:cisco:ios_xe:12.2\(33\)sre7a:*:*:*:*:*:*:*, cpe:2.3:h:cisco:7600_series_route_switch_processor_720:-:*:*:*:*:*:*:*, cpe:2.3:h:cisco:7600_series_supervisor_engine_32:-:*:*:*:*:*:*:*, cpe:2.3:h:cisco:7600_series_supervisor_engine_720:-:*:*:*:*:*:*:*, cpe:2.3:o:cisco:ios:12.2\(33\)sre7a:*:*:*:*:*:*:*, cpe:2.3:o:cisco:ios_xe:12.2\(33\)sre7a:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:allen-bradley_armorstratix_5700:-:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5400:-:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5410:-:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5700:-:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8000:-:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:*:*:*:*:*:*:*

Patch Publication Date: 3/28/2018

Vulnerability Publication Date: 3/28/2018

Reference Information

CVE: CVE-2018-0174