CVE-2022-20717

Cisco SD-WAN vEdge Routers Denial of Service Vulnerability

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the NETCONF process of Cisco SD-WAN vEdge Routers could allow an authenticated, local attacker to cause an affected device to run out of memory, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient memory management when an affected device receives large amounts of traffic. An attacker could exploit this vulnerability by sending malicious traffic to an affected device. A successful exploit could allow the attacker to cause the device to crash, resulting in a DoS condition.

Una vulnerabilidad en el proceso NETCONF de los routers Cisco SD-WAN vEdge podría permitir a un atacante local autenticado causar a un dispositivo afectado quedarse sin memoria, resultando en una condición de denegación de servicio (DoS). Esta vulnerabilidad es debido a una administración insuficiente de la memoria cuando un dispositivo afectado recibe grandes cantidades de tráfico. Un atacante podría explotar esta vulnerabilidad mediante el envío de tráfico malicioso a un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar un bloqueo del dispositivo, resultando en una condición de DoS

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2021-11-02 CVE Reserved
2022-04-15 CVE Published
2023-03-08 EPSS Updated
2024-11-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-770: Allocation of Resources Without Limits or Throttling
CWE-789: Memory Allocation with Excessive Size Value

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-sdwan-vedge-dos-jerVm4bB	2023-05-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Cisco Search vendor "Cisco"	1100 Integrated Services Router Search vendor "Cisco" for product "1100 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 1000 Search vendor "Citrix" for product "Sd-wan 1000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 110 Search vendor "Citrix" for product "Sd-wan 110"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 1100 Search vendor "Citrix" for product "Sd-wan 1100"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 2000 Search vendor "Citrix" for product "Sd-wan 2000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 210 Search vendor "Citrix" for product "Sd-wan 210"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 2100 Search vendor "Citrix" for product "Sd-wan 2100"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	<= 20.6 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version " <= 20.6"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 5100 Search vendor "Citrix" for product "Sd-wan 5100"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Cisco Search vendor "Cisco"	1100 Integrated Services Router Search vendor "Cisco" for product "1100 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 1000 Search vendor "Citrix" for product "Sd-wan 1000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 110 Search vendor "Citrix" for product "Sd-wan 110"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 1100 Search vendor "Citrix" for product "Sd-wan 1100"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 2000 Search vendor "Citrix" for product "Sd-wan 2000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 210 Search vendor "Citrix" for product "Sd-wan 210"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 2100 Search vendor "Citrix" for product "Sd-wan 2100"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Vedge Router Search vendor "Cisco" for product "Sd-wan Vedge Router"	20.7 Search vendor "Cisco" for product "Sd-wan Vedge Router" and version "20.7"	-	Affected	in	Citrix Search vendor "Citrix"	Sd-wan 5100 Search vendor "Citrix" for product "Sd-wan 5100"	-	-	Safe