Vulnerability · Published Aug 19, 2021 · Assigned by mitre

CVE-2021-31226

Critical 9.8

In plain English

A critical-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 3.2% (higher than 88% of all known vulnerabilities).

Severity (CVSS NVD)9.8Critical

Exploit odds (30 days)3.2%top 12.0% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. This vulnerability requires the attacker to send a crafted HTTP POST request with a URI longer than 50 bytes. This leads to a heap overflow in wbs_post() via an strcpy() call.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

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