Vulnerability CVE-2021-27565
Published: 2021-08-19

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.

Type:

CWE-835

 (Loop with Unreachable Exit Condition ('Infinite Loop'))

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Hcc-embedded -> Nichestack 

 References:
https://www.hcc-embedded.com/
https://www.kb.cert.org/vuls/id/608209
https://www.hcc-embedded.com/about/about-interniche
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
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