CVE-2020-25928 Information

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 esponse 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.

CVSS Vector

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

Reference

https://www.kb.cert.org/vuls/id/608209 https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8