CVE-2020-25928

Description

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow. The impact is: execute arbitrary code (remote). The component is: DNS response processing functions: dns_upcall(), getoffset(), dnc_set_answer(). The attack vector is: a specific DNS response packet. The code does not check the "response data length" field of individual DNS answers, which may cause out-of-bounds read/write operations, leading to Information leak, Denial-or-Service, or Remote Code Execution, depending on the context.

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-2020-25928?: CVE-2020-25928 has been scored as a critical severity vulnerability.
How to fix CVE-2020-25928?: To fix CVE-2020-25928, 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-2020-25928 being actively exploited in the wild?: It is possible that CVE-2020-25928 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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Description

Category

CWE-125 – Out-of-bounds Read

References

Frequently Asked Questions