Cisco IOS/IOS XE SSH exceptional condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Cisco IOS and IOS XE. Impacted is an unknown function of the component SSH. Such manipulation leads to exceptional condition. This vulnerability is referenced as CVE-2022-20920. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS and IOS XE (Router Operating System) (affected version not known) and classified as critical. Affected by this issue is some unknown functionality of the component SSH. The manipulation with an unknown input leads to a exceptional condition vulnerability. Using CWE to declare the problem leads to CWE-755. The product does not handle or incorrectly handles an exceptional condition. Impacted is availability. CVE summarizes:

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.

The weakness was published 10/11/2022 as cisco-sa-ssh-excpt-dos-FzOBQTnk. The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2022-20920 since 11/02/2021. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/01/2025).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.7
NVD Vector: 🔍

CNA Base Score: 7.7
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Exceptional condition
CWE: CWE-755
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/02/2021 🔍
10/11/2022 +342 days 🔍
10/11/2022 +0 days 🔍
08/01/2025 +1025 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-ssh-excpt-dos-FzOBQTnk
Status: Confirmed

CVE: CVE-2022-20920 (🔍)
GCVE (CVE): GCVE-0-2022-20920
GCVE (VulDB): GCVE-100-210380
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 10/11/2022 09:46
Updated: 08/01/2025 17:23
Changes: 10/11/2022 09:46 (49), 10/31/2022 14:41 (11), 08/01/2025 17:23 (15)
Complete: 🔍
Cache ID: 216::103

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