CVE-2022-20625
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/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Firepower Extensible Operating System | < 2.3.1.219 |
| Cisco | Firepower Extensible Operating System | >= 2.4, < 2.9.1.158 |
| Cisco | Firepower Extensible Operating System | >= 2.10, < 2.10.1.179 |
| Cisco | Nx-Os | 8.2\(7.34\) |
| Cisco | Nx-Os | 5.2\(1\)sv5\(1.3b\) |
| Cisco | Nx-Os | 9.3\(8.15\) |
| Cisco | Nx-Os | 4.0\(1a\)a |
| Cisco | Nx-Os | 4.1\(3f\)c |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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