#VU62337 Resource exhaustion in Cisco Systems, Inc products - CVE-2022-20692

Vulnerability identifier: #VU62337

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-20692

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XE
Operating systems & Components / Operating system
Catalyst 3850 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9200 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9300 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9400 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9500 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9500H Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 9600 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in the NETCONF over SSH feature. A remote user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: 16.12.1

Catalyst 3850 Series Switches: All versions

Catalyst 9200 Series Switches: All versions

Catalyst 9300 Series Switches: All versions

Catalyst 9400 Series Switches: All versions

Catalyst 9500 Series Switches: All versions

Catalyst 9500H Series Switches: All versions

Catalyst 9600 Series Switches: All versions

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncossh-dos-ZAkfOdq8

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.