Vulnerability · Published Aug 19, 2021 · Assigned by mitre
CVE-2021-27565
High 7.5
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 85% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.6%top 14.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 products (as reported)
References
- https://www.hcc-embedded.com/ x_refsource_MISC
- https://www.hcc-embedded.com/about/about-interniche x_refsource_MISC
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ x_refsource_MISC
- VU#608209 third-party-advisory, x_refsource_CERT-VN