CVE-2018-0257

Severity Score

4.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in Cisco IOS XE Software running on Cisco cBR Series Converged Broadband Routers could allow an unauthenticated, adjacent attacker to cause high CPU usage on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the incorrect handling of certain DHCP packets. An attacker could exploit this vulnerability by sending certain DHCP packets to a specific segment of an affected device. A successful exploit could allow the attacker to increase CPU usage on the affected device and cause a DoS condition. Cisco Bug IDs: CSCvg73687.

Una vulnerabilidad en Cisco IOS XE Software de Cisco cBR Series Converged Broadband Routers podría permitir que un atacante adyacente sin autenticar provoque un uso alto de CPU en un dispositivo afectado, lo que resulta en una condición de denegación de servicio (DoS). Esta vulnerabilidad se debe a la gestión incorrecta de ciertos paquetes DHCP. Un atacante podría explotar esta vulnerabilidad enviando ciertos paquetes DHCP a un segmento en concreto de un dispositivo afectado. Su explotación exitosa podría permitir que el atacante aumente el uso de CPU en el dispositivo afectado y provoque una denegación de servicio (DoS). Cisco Bug IDs: CSCvg73687.

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-27 CVE Reserved
2018-04-19 CVE Published
2023-10-20 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/103948	Third Party Advisory
http://www.securitytracker.com/id/1040716	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-cbr8	2019-10-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				>= 3.18 <= 3.18.4 Search vendor "Cisco" for product "Ios Xe" and version " >= 3.18 <= 3.18.4"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				>= 16.6 <= 16.6.3 Search vendor "Cisco" for product "Ios Xe" and version " >= 16.6 <= 16.6.3"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				> 16.7 <= 16.7.2 Search vendor "Cisco" for product "Ios Xe" and version " > 16.7 <= 16.7.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				15.6\(2\)sp Search vendor "Cisco" for product "Ios Xe" and version "15.6\(2\)sp"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.4 Search vendor "Cisco" for product "Ios Xe" and version "16.4"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				16.5 Search vendor "Cisco" for product "Ios Xe" and version "16.5"		-		Affected