Vulnerability Description
An issue was discovered in tcp_pulloutofband() in tcp_in.c in HCC embedded InterNiche 4.0.1. The TCP out-of-band urgent-data processing function invokes a panic function if the pointer to the end of the out-of-band data points outside of the TCP segment's data. If the panic function hadn't a trap invocation removed, it will enter an infinite loop and therefore cause DoS (continuous loop or a device reset).
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-2021-31400?
CVE-2021-31400 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in tcp_pulloutofband() in tcp_in.c in HCC embedded InterNiche 4.0.1. The TCP out-of-band urgent-data processing function invokes a panic function if the pointer to the end of t...
How severe is CVE-2021-31400?
CVE-2021-31400 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-2021-31400?
Check the references section above for vendor advisories and patch information. Affected products include: Hcc-Embedded Nichestack.