Vulnerability Details CVE-2021-31227
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 an incorrect signed integer comparison. This vulnerability requires the attacker to send a malformed HTTP packet with a negative Content-Length, which bypasses the size checks and results in a large heap overflow in the wbs_multidata buffer copy.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 44.4%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
Products affected by CVE-2021-31227
-
cpe:2.3:a:hcc-embedded:nichestack:3.0