CVE-2019-1712

Cisco IOS XR Software Protocol Independent Multicast Denial of Service Vulnerability

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause the PIM process to restart, resulting in a denial of service condition on an affected device. The vulnerability is due to the incorrect processing of crafted AutoRP packets. An attacker could exploit this vulnerability by sending crafted packets to port UDP 496 on a reachable IP address on the device. A successful exploit could allow the attacker to cause the PIM process to restart. Software versions prior to 6.2.3, 6.3.2, 6.4.0, and 6.5.1 are affected.

Una vulnerabilidad en la característica de Protocolo (Protocol Independent Multicast (PIM) Independent Multicast (PIM) del programa Cisco IOS XR podría permitir que un atacante remoto no identificado haga que el proceso de PIM se reinicie, lo que resulta en una condición de Denegación de Servicio (DoS) en un dispositivo afectado. La vulnerabilidad se debe al procesamiento incorrecto de los paquetes de AutoRP creados. Un atacante podría aprovechar esta vulnerabilidad enviando paquetes creados al puerto UDP 496 en una dirección IP accesible en el dispositivo. Una explotación exitosa podría permitir al atacante hacer que el proceso PIM se reinicie. Las versiones del programa anteriores a 6.2.3, versión 6.3.2,versión 6.4.0 y versión 6.5.1 están afectadas.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-04-17 CVE Published
2024-09-07 EPSS Updated
2024-11-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/108025	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-iosxr-pim-dos	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 Xr Search vendor "Cisco" for product "Ios Xr"				< 6.2.3 Search vendor "Cisco" for product "Ios Xr" and version " < 6.2.3"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				>= 6.2.25 < 6.3.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 6.2.25 < 6.3.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				>= 6.3.3 < 6.4.0 Search vendor "Cisco" for product "Ios Xr" and version " >= 6.3.3 < 6.4.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xr Search vendor "Cisco" for product "Ios Xr"				>= 6.4.1 < 6.5.1 Search vendor "Cisco" for product "Ios Xr" and version " >= 6.4.1 < 6.5.1"		-		Affected