// For flags

CVE-2019-16019

Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities

Severity Score

8.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit these vulnerabilities, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.

Múltiples vulnerabilidades en la implementación de la funcionalidad Border Gateway Protocol (BGP) Ethernet VPN (EVPN) en Cisco IOS XR Software, podrían permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS). Las vulnerabilidades son debido al procesamiento incorrecto de los mensajes de actualización de BGP que contienen atributos EVPN diseñados. Un atacante podría explotar estas vulnerabilidades mediante el envío de mensajes de actualización de BGP EVPN con atributos malformados para que sean procesados por un sistema afectado. Una explotación con éxito podría permitir a un atacante causar que el proceso BGP se reinicie inesperadamente, resultando en una condición DoS. La implementación de Cisco de BGP acepta tráfico BGP entrante solo de peers definidos explícitamente. Para explotar estas vulnerabilidades, el mensaje de actualización de BGP malicioso necesitaría provenir de un peer BGP válido configurado, o necesitaría ser inyectado por el atacante en la red BGP de la víctima en una conexión TCP válida existente para un peer BGP

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
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
  • 2019-09-06 CVE Reserved
  • 2020-09-23 CVE Published
  • 2023-06-08 EPSS Updated
  • 2024-11-13 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-399: Resource Management Errors
CAPEC
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"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9000
Search vendor "Cisco" for product "Asr 9000"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9010
Search vendor "Cisco" for product "Asr 9010"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9904
Search vendor "Cisco" for product "Asr 9904"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9910
Search vendor "Cisco" for product "Asr 9910"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9912
Search vendor "Cisco" for product "Asr 9912"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9922
Search vendor "Cisco" for product "Asr 9922"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 540
Search vendor "Cisco" for product "Ncs 540"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5500
Search vendor "Cisco" for product "Ncs 5500"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.1
Search vendor "Cisco" for product "Ios Xr" and version "6.6.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 6000
Search vendor "Cisco" for product "Ncs 6000"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9000
Search vendor "Cisco" for product "Asr 9000"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9000
Search vendor "Cisco" for product "Asr 9000"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9010
Search vendor "Cisco" for product "Asr 9010"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9010
Search vendor "Cisco" for product "Asr 9010"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9904
Search vendor "Cisco" for product "Asr 9904"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9904
Search vendor "Cisco" for product "Asr 9904"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9910
Search vendor "Cisco" for product "Asr 9910"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9910
Search vendor "Cisco" for product "Asr 9910"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9912
Search vendor "Cisco" for product "Asr 9912"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9912
Search vendor "Cisco" for product "Asr 9912"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9922
Search vendor "Cisco" for product "Asr 9922"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9922
Search vendor "Cisco" for product "Asr 9922"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Carrier Routing System
Search vendor "Cisco" for product "Carrier Routing System"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Ios Xrv 9000
Search vendor "Cisco" for product "Ios Xrv 9000"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5001
Search vendor "Cisco" for product "Ncs 5001"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5002
Search vendor "Cisco" for product "Ncs 5002"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5011
Search vendor "Cisco" for product "Ncs 5011"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 540
Search vendor "Cisco" for product "Ncs 540"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5500
Search vendor "Cisco" for product "Ncs 5500"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.2
Search vendor "Cisco" for product "Ios Xr" and version "6.6.2"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 6000
Search vendor "Cisco" for product "Ncs 6000"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.25
Search vendor "Cisco" for product "Ios Xr" and version "6.6.25"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 540
Search vendor "Cisco" for product "Ncs 540"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.25
Search vendor "Cisco" for product "Ios Xr" and version "6.6.25"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 540l
Search vendor "Cisco" for product "Ncs 540l"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.25
Search vendor "Cisco" for product "Ios Xr" and version "6.6.25"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5500
Search vendor "Cisco" for product "Ncs 5500"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
6.6.25
Search vendor "Cisco" for product "Ios Xr" and version "6.6.25"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 560
Search vendor "Cisco" for product "Ncs 560"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9000
Search vendor "Cisco" for product "Asr 9000"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9010
Search vendor "Cisco" for product "Asr 9010"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9904
Search vendor "Cisco" for product "Asr 9904"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9910
Search vendor "Cisco" for product "Asr 9910"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9912
Search vendor "Cisco" for product "Asr 9912"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Asr 9922
Search vendor "Cisco" for product "Asr 9922"
-x64
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ios Xrv 9000
Search vendor "Cisco" for product "Ios Xrv 9000"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 1001
Search vendor "Cisco" for product "Ncs 1001"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 1002
Search vendor "Cisco" for product "Ncs 1002"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 1004
Search vendor "Cisco" for product "Ncs 1004"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5001
Search vendor "Cisco" for product "Ncs 5001"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5002
Search vendor "Cisco" for product "Ncs 5002"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5011
Search vendor "Cisco" for product "Ncs 5011"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 540
Search vendor "Cisco" for product "Ncs 540"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 540l
Search vendor "Cisco" for product "Ncs 540l"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 5500
Search vendor "Cisco" for product "Ncs 5500"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 560
Search vendor "Cisco" for product "Ncs 560"
--
Safe
Cisco
Search vendor "Cisco"
Ios Xr
Search vendor "Cisco" for product "Ios Xr"
7.0.1
Search vendor "Cisco" for product "Ios Xr" and version "7.0.1"
-
Affected
in Cisco
Search vendor "Cisco"
Ncs 6000
Search vendor "Cisco" for product "Ncs 6000"
--
Safe