CVE-2020-25110: Vulnerability Analysis & Exploit Details

Status: Analyzed - Last modified: 15-12-2020 Published: 11-12-2020

CVE-2020-25110
Vulnerability Scoring

9.8
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: NETWORK
  • Privileges Required: None
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality: HIGH IMPACT
  • Integrity: HIGH IMPACT
  • Availability: HIGH IMPACT

CVE-2020-25110 Vulnerability Summary

An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. The length byte of a domain name in a DNS query/response is not checked, and is used for internal memory operations. This may lead to successful Denial-of-Service, and possibly Remote Code Execution.

Access Complexity Graph for CVE-2020-25110

Impact Analysis for CVE-2020-25110

CVE-2020-25110: Detailed Information and External References

EPSS

0.67388

EPSS %

0.98176

References

0.67388

CWE

CWE-125

CAPEC

0.67388

  • Overread Buffers: An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Vulnerable Configurations

  • cpe:2.3:o:ethernut:nut\/os:4.10:*:*:*:*:*:*:*
    cpe:2.3:o:ethernut:nut\/os:4.10:*:*:*:*:*:*:*
  • cpe:2.3:o:ethernut:nut\/os:5.1:*:*:*:*:*:*:*
    cpe:2.3:o:ethernut:nut\/os:5.1:*:*:*:*:*:*:*

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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