Vulnerability 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 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hcc-Embedded | Nichestack | < 4.3 |
Related Weaknesses (CWE)
References
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilitiMitigationThird Party Advisory
- https://www.kb.cert.org/vuls/id/608209Third Party AdvisoryUS Government Resource
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilitiMitigationThird Party Advisory
- https://www.kb.cert.org/vuls/id/608209Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2021-31227?
CVE-2021-31227 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 vul...
How severe is CVE-2021-31227?
CVE-2021-31227 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-31227?
Check the references section above for vendor advisories and patch information. Affected products include: Hcc-Embedded Nichestack.