CVE-2020-25767

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.39%
Third-Party Advisory cert.org Third-Party Advisory forescout.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ third party advisory mitigation
https://www.kb.cert.org/vuls/id/608209 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2020-25767?
CVE-2020-25767 has been scored as a high severity vulnerability.
How to fix CVE-2020-25767?
To fix CVE-2020-25767, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-25767 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-25767 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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