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CVE-2022-20625

MEDIUMCVSS 4.3/10EPSS 3.40%

Last modified

CVE-2022-20625 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability in the Cisco Discovery Protocol service of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the service to restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of Cisco Discovery Protocol messages that are processed by the Cisco Discovery Protocol service. EPSS estimates a 3.40% chance of exploitation in the next 30 days.

Description

A vulnerability in the Cisco Discovery Protocol service of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the service to restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of Cisco Discovery Protocol messages that are processed by the Cisco Discovery Protocol service. An attacker could exploit this vulnerability by sending a series of malicious Cisco Discovery Protocol messages to an affected device. A successful exploit could allow the attacker to cause the Cisco Discovery Protocol service to fail and restart. In rare conditions, repeated failures of the process could occur, which could cause the entire device to restart.

Metrics

CVSS 3.1
4.3/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability
3.40%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Extensible Operating System< 2.3.1.219
CiscoFirepower Extensible Operating System>= 2.4, < 2.9.1.158
CiscoFirepower Extensible Operating System>= 2.10, < 2.10.1.179
CiscoNx-Os8.2\(7.34\)
CiscoNx-Os5.2\(1\)sv5\(1.3b\)
CiscoNx-Os9.3\(8.15\)
CiscoNx-Os4.0\(1a\)a
CiscoNx-Os4.1\(3f\)c

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-20625?
A vulnerability in the Cisco Discovery Protocol service of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the service to restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of Cisco Discovery Protocol messages that are processed by the Cisco Discovery Protocol service. An attacker could exploit this vulnerability by sending a series of malicious Cisco Discovery Protocol messages to an affected device. A successful exploit could allow the attacker to cause the Cisco Discovery Protocol service to fail and restart. In rare conditions, repeated failures of the process could occur, which could cause the entire device to restart.
How severe is CVE-2022-20625?
CVE-2022-20625 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 3.40% probability of exploitation in the next 30 days.
How do I fix CVE-2022-20625?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-20625?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST