CVE-2022-20920

CVSS V2 None CVSS V3 High 7.7

Description

A vulnerability in the SSH implementation of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to improper handling of resources during an exceptional situation. An attacker could exploit this vulnerability by continuously connecting to an affected device and sending specific SSH requests. A successful exploit could allow the attacker to cause the affected device to reload.

Overview

CVE ID
CVE-2022-20920

Assigner
ykramarz@cisco.com

Vulnerability Status
Analyzed

Published Version
2022-10-10T21:15:10

Last Modified Date
2022-10-13T19:55:23

Weakness Enumerations

CWE	URL
CWE-755	http://cwe.mitre.org/data/definitions/755.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:cisco:ios:-:::::::*	1	OR
cpe:2.3:o:cisco:ios_xe:-:::::::*	1	OR

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
CHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
7.7

Base Severity
HIGH

Exploitability Score
3.1

Impact Score
4

References

Reference URL	Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssh-excpt-dos-FzOBQTnk

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2022-20920
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-20920

History

Created	Old Value	New Value	Data Type	Notes
2022-10-10 22:01:00				Added to TrackCVE
2022-12-07 05:57:24	psirt@cisco.com	ykramarz@cisco.com	CVE Assigner	updated
2022-12-07 05:57:24	2022-10-10T21:15Z	2022-10-10T21:15:10	CVE Published Date	updated
2022-12-07 05:57:24		2022-10-13T19:55:23	CVE Modified Date	updated
2022-12-07 05:57:24		Analyzed	Vulnerability Status	updated