#VU60839 Resource management error in Cisco FXOS - CVE-2022-20625

Vulnerability identifier: #VU60839

Vulnerability risk: Medium

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

CVE-ID: CVE-2022-20625

CWE-ID: CWE-399

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Cisco FXOS
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

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

The vulnerability exists due to improper handling of Cisco Discovery Protocol messages that are processed by the Cisco Discovery Protocol service. A remote attacker on the local network can send specially crafted CDP messages to the system and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco FXOS: before 2.3.1.219

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cdp-dos-G8DPLWYG
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz72442
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz72462
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz72463
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz72464
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz72465
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz72466
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz72467
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz74433

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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