// For flags

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

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*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
CVSS Scores
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
  • 2019-12-12 CVE Reserved
  • 2020-03-04 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-11-15 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
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"
 < 6.4.3
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