CVE-2021-31401

 

Published at: - 19-08-2021 02:15

Last modified: - 26-09-2022 12:39

Total changes: - 5

Description

An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing code doesn't sanitize the value of the IP total length field (header length + data length). With a crafted IP packet, an integer overflow occurs whenever the value of the IP data length is calculated by subtracting the length of the header from the total length of the IP packet.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf
• VU#608209-Third Party Advisory, US Government Resource
• https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/

 

Keywords

NVD

 

CVE-2021-31401

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures