CVE-2018-0174

Severity CVSS v4.0:

Pending analysis

Type:

CWE-20 Input Validation

Publication date:

28/03/2018

Last modified:

14/01/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

8.60

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0

7.80

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
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::::::::		15.2\(4a\)ea5 (including)
cpe:2.3:o:cisco:ios_xe::::::::		15.2\(4a\)ea5 (including)
cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:::::::*
cpe:2.3:o:cisco:ios::::::::		15.2\(6\)e0a (including)
cpe:2.3:o:cisco:ios_xe::::::::		15.2\(6\)e0a (including)
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:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
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::::::::		15.2\(4a\)ea5 (including)
cpe:2.3:o:cisco:ios_xe::::::::		15.2\(4a\)ea5 (including)
cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:::::::*
cpe:2.3:o:cisco:ios::::::::		15.2\(6\)e0a (including)
cpe:2.3:o:cisco:ios_xe::::::::		15.2\(6\)e0a (including)
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:-:::::::*

CVE-2018-0174

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools