CVE-2022-20697

Cisco IOS and IOS XE Software Web Services Denial of Service Vulnerability

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the web services interface of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper resource management in the HTTP server code. An attacker could exploit this vulnerability by sending a large number of HTTP requests to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Una vulnerabilidad en la interfaz de servicios web de Cisco IOS Software and Cisco IOS XE Software podría permitir a un atacante remoto autenticado causar una condición de denegación de servicio (DoS). Esta vulnerabilidad es debido a una administración inapropiada de los recursos en el código del servidor HTTP. Un atacante podría explotar esta vulnerabilidad mediante el envío de un gran número de peticiones HTTP a un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar a el dispositivo recargarse, resultando en una condición de DoS

*Credits: N/A

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

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2021-11-02 CVE Reserved
2022-04-15 CVE Published
2024-11-06 CVE Updated
2024-11-19 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-691: Insufficient Control Flow Management
CWE-772: Missing Release of Resource after Effective Lifetime

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-http-dos-svOdkdBS	2023-11-07

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 Search vendor "Cisco" for product "Ios"				15.1\(3\)svr1 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svr1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svr2 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svr2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svr3 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svr3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svs Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svs"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svs1 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svs1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svt1 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svt1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svt2 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svt2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svt3 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svt3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svu1 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svu1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svu2 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svu2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svu10 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svu10"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.1\(3\)svv1 Search vendor "Cisco" for product "Ios" and version "15.1\(3\)svv1"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.2\(7\)e3 Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.2\(7\)e3a Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e3a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.2\(7\)e3k Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e3k"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.2\(7\)e4 Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e4"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.2\(8\)e Search vendor "Cisco" for product "Ios" and version "15.2\(8\)e"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.2\(234k\)e Search vendor "Cisco" for product "Ios" and version "15.2\(234k\)e"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.3\(3\)jk100 Search vendor "Cisco" for product "Ios" and version "15.3\(3\)jk100"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.3\(3\)jpj8 Search vendor "Cisco" for product "Ios" and version "15.3\(3\)jpj8"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.9\(3\)m2 Search vendor "Cisco" for product "Ios" and version "15.9\(3\)m2"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.9\(3\)m2a Search vendor "Cisco" for product "Ios" and version "15.9\(3\)m2a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.9\(3\)m3 Search vendor "Cisco" for product "Ios" and version "15.9\(3\)m3"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.9\(3\)m3a Search vendor "Cisco" for product "Ios" and version "15.9\(3\)m3a"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.9\(3\)m3b Search vendor "Cisco" for product "Ios" and version "15.9\(3\)m3b"		-		Affected
Cisco Search vendor "Cisco"		Ios Search vendor "Cisco" for product "Ios"				15.9\(3\)m4 Search vendor "Cisco" for product "Ios" and version "15.9\(3\)m4"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.11.3ae Search vendor "Cisco" for product "Ios Xe" and version "3.11.3ae"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.11.3e Search vendor "Cisco" for product "Ios Xe" and version "3.11.3e"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.11.4e Search vendor "Cisco" for product "Ios Xe" and version "3.11.4e"		-		Affected