Vulnerability Description
An issue was discovered in HCC Embedded NicheStack IPv4 4.1. The dnc_copy_in routine for parsing DNS domain names does not check whether a domain name compression pointer is pointing within the bounds of the packet (e.g., forward compression pointer jumps are allowed), which leads to an Out-of-bounds Read, and a Denial-of-Service as a consequence.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hcc-Embedded | Nichestack Ipv4 | 4.1 |
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-2020-25767?
CVE-2020-25767 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in HCC Embedded NicheStack IPv4 4.1. The dnc_copy_in routine for parsing DNS domain names does not check whether a domain name compression pointer is pointing within the bounds...
How severe is CVE-2020-25767?
CVE-2020-25767 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-2020-25767?
Check the references section above for vendor advisories and patch information. Affected products include: Hcc-Embedded Nichestack Ipv4.