CVE-2020-3190

Cisco IOS XR Software IPsec Packet Processor Denial of Service Vulnerability

Severity Score

5.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the IPsec packet processor of Cisco IOS XR Software could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition for IPsec sessions to an affected device. The vulnerability is due to improper handling of packets by the IPsec packet processor. An attacker could exploit this vulnerability by sending malicious ICMP error messages to an affected device that get punted to the IPsec packet processor. A successful exploit could allow the attacker to deplete IPsec memory, resulting in all future IPsec packets to an affected device being dropped by the device. Manual intervention is required to recover from this situation.

Una vulnerabilidad en el procesador de paquetes IPsec de Cisco IOS XR Software, podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) para sesiones IPsec en un dispositivo afectado. La vulnerabilidad es debido al manejo inapropiado de los paquetes por parte del procesador de paquetes IPsec. Un atacante podría explotar esta vulnerabilidad mediante el envío de mensajes de error ICMP maliciosos hacia un dispositivo afectado que se someterán al procesador de paquetes IPsec. Una explotación con éxito podría permitir al atacante agotar la memoria de IPsec, resultando en que todos los futuros paquetes de IPsec a un dispositivo afectado sean descartados por el dispositivo. Es requerida una intervención manual para recuperarse de esta situación.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

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

2019-12-12 CVE Reserved
2020-03-04 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-ipsec-dos-q8UPX6m	2020-03-06

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 Xr Search vendor "Cisco" for product "Ios Xr"				< 6.4.3 Search vendor "Cisco" for product "Ios Xr" and version " < 6.4.3"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				>= 6.6.0 < 6.6.3 Search vendor "Cisco" for product "Ios Xr" and version " >= 6.6.0 < 6.6.3"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				>= 7.0.0 < 7.0.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.0.0 < 7.0.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				>= 7.1.0 < 7.1.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.1.0 < 7.1.1"		-		Affected