CVE-2018-0273

Severity Score

5.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the IPsec Manager of Cisco StarOS for Cisco Aggregation Services Router (ASR) 5000 Series Routers and Virtualized Packet Core (VPC) System Software could allow an unauthenticated, remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from being established, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of corrupted Internet Key Exchange Version 2 (IKEv2) messages. An attacker could exploit this vulnerability by sending crafted IKEv2 messages toward an affected router. A successful exploit could allow the attacker to cause the ipsecmgr service to reload. A reload of this service could cause all IPsec VPN tunnels to be terminated and prevent new tunnels from being established until the service has restarted, resulting in a DoS condition. This vulnerability affects the following Cisco products when they are running Cisco StarOS: Cisco Aggregation Services Router (ASR) 5000 Series Routers, Virtualized Packet Core (VPC) System Software. Cisco Bug IDs: CSCve29605.

Una vulnerabilidad en IPsec Manager en Cisco StarOS para Cisco Aggregation Services Router (ASR) 5000 Series Routers y Virtualized Packet Core (VPC) System Software podría permitir que un atacante remoto no autenticado termine todos los túneles VPN IPsec y evite que se establezcan nuevos túneles. Esto resultaría en una condición de denegación de servicio (DoS). La vulnerabilidad se debe al procesamiento incorrecto de mensajes Internet Key Exchange Version 2 (IKEv2) corruptos. Un atacante podría explotar esta vulnerabilidad enviando mensajes IKEv2 manipulados a un dispositivo afectado. Su explotación con éxito podría permitir que el atacante consiga que el servicio ipsecmgr se vuelva a cargar. Una recarga de este servicio podría provocar que todos los túneles VPN IPsec se terminen y que no se puedan crear otros hasta que el servicio se reinicie, lo que desemboca en una condición de denegación de servicio (DoS). Esta vulnerabilidad afecta a los siguientes productos de Cisco que ejecutan el software Cisco StarOS: Cisco Aggregation Services Router (ASR) 5000 Series Routers y Virtualized Packet Core (VPC) System Software. Cisco Bug IDs: CSCve29605.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

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/103935	Third Party Advisory
http://www.securitytracker.com/id/1040721	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-starosasr	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"	Staros Search vendor "Cisco" for product "Staros"	19.4.2.65120 Search vendor "Cisco" for product "Staros" and version "19.4.2.65120"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5000 Search vendor "Cisco" for product "Asr 5000"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	19.4.2.65120 Search vendor "Cisco" for product "Staros" and version "19.4.2.65120"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5500 Search vendor "Cisco" for product "Asr 5500"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	19.4.2.65120 Search vendor "Cisco" for product "Staros" and version "19.4.2.65120"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5700 Search vendor "Cisco" for product "Asr 5700"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	19.6.0 Search vendor "Cisco" for product "Staros" and version "19.6.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5000 Search vendor "Cisco" for product "Asr 5000"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	19.6.0 Search vendor "Cisco" for product "Staros" and version "19.6.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5500 Search vendor "Cisco" for product "Asr 5500"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	19.6.0 Search vendor "Cisco" for product "Staros" and version "19.6.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5700 Search vendor "Cisco" for product "Asr 5700"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.2.0 Search vendor "Cisco" for product "Staros" and version "21.2.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5000 Search vendor "Cisco" for product "Asr 5000"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.2.0 Search vendor "Cisco" for product "Staros" and version "21.2.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5500 Search vendor "Cisco" for product "Asr 5500"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.2.0 Search vendor "Cisco" for product "Staros" and version "21.2.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5700 Search vendor "Cisco" for product "Asr 5700"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.2.6 Search vendor "Cisco" for product "Staros" and version "21.2.6"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5000 Search vendor "Cisco" for product "Asr 5000"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.2.6 Search vendor "Cisco" for product "Staros" and version "21.2.6"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5500 Search vendor "Cisco" for product "Asr 5500"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.2.6 Search vendor "Cisco" for product "Staros" and version "21.2.6"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5700 Search vendor "Cisco" for product "Asr 5700"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.4.0 Search vendor "Cisco" for product "Staros" and version "21.4.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5000 Search vendor "Cisco" for product "Asr 5000"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.4.0 Search vendor "Cisco" for product "Staros" and version "21.4.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5500 Search vendor "Cisco" for product "Asr 5500"	-	-	Safe
Cisco Search vendor "Cisco"	Staros Search vendor "Cisco" for product "Staros"	21.4.0 Search vendor "Cisco" for product "Staros" and version "21.4.0"	-	Affected	in	Cisco Search vendor "Cisco"	Asr 5700 Search vendor "Cisco" for product "Asr 5700"	-	-	Safe