Denial-of-Service Vulnerability in Ethernut's DNS Implementation
CVE-2020-25110

9.8CRITICAL

Key Information:

Vendor

Ethernut

Status
Nut\/os
Vendor
CVE Published:
11 December 2020

What is CVE-2020-25110?

A vulnerability exists in the DNS implementation of Ethernut's Nut/OS 5.1, where the length byte of a domain name is improperly validated in DNS queries and responses. This oversight can be exploited, potentially leading to a Denial-of-Service condition. Furthermore, the improper handling of memory operations could allow for a risk of Remote Code Execution, posing significant security challenges for users of this system.

References

https://www.kb.cert.org/vuls/id/815128
x_refsource_MISC
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
x_refsource_MISC

EPSS Score

53% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.