CVEvulnerability
CVE-2021-27565
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-08-19
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-835
Description
The web server in InterNiche NicheStack through 4.0.1 allows remote attackers to cause a denial of service (infinite loop and networking outage) via an unexpected valid HTTP request such as OPTIONS. This occurs because the HTTP request handler enters a miscoded wbs_loop() debugger hook.
Affected configurations
• hcc-embedded nichestack (<= 4.0.1)
Related
Weakness · CWE (1)
- CWE-835 Loop with Unreachable Exit Condition weakness
References
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ Mitigation, Third Party Advisory
- https://www.hcc-embedded.com/ Product
- https://www.hcc-embedded.com/about/about-interniche Product
- https://www.kb.cert.org/vuls/id/608209 Third Party Advisory, US Government Resource
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ Mitigation, Third Party Advisory
- https://www.hcc-embedded.com/ Product
- https://www.hcc-embedded.com/about/about-interniche Product
- https://www.kb.cert.org/vuls/id/608209 Third Party Advisory, US Government Resource