CVE-2021-31227
Last modified
CVE-2021-31227 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.68% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hcc-Embedded | Nichestack | < 4.3 |
References
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/Mitigation, Third Party Advisory
- https://www.kb.cert.org/vuls/id/608209Third Party Advisory, US Government Resource
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/Mitigation, Third Party Advisory
- https://www.kb.cert.org/vuls/id/608209Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
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