CVE-2021-27565

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.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 84%
VendorProductVersion
hcc-embeddednichestack
𝑥
≤ 4.0.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
https://www.hcc-embedded.com/
https://www.hcc-embedded.com/about/about-interniche
https://www.kb.cert.org/vuls/id/608209
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
https://www.hcc-embedded.com/
https://www.hcc-embedded.com/about/about-interniche
https://www.kb.cert.org/vuls/id/608209