Denial of service in Cisco FXOS Discovery Protocol

Published: 2022-02-24

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2022-20625
CWE-ID	CWE-399
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	Cisco FXOS Operating systems & Components / Operating system
Vendor

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource management error

EUVDB-ID: #VU60839

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20625

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

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 2.10.1.179

External links

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.