Executive Summary

Informations
Name CVE-2020-35684 First vendor Publication 2021-08-19
Vendor Cve Last vendor Modification 2021-08-26

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

An issue was discovered in HCC Nichestack 3.0. The code that parses TCP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the length of the TCP payload within the TCP checksum computation function. When the IP payload size is set to be smaller than the size of the IP header, the TCP checksum computation function may read out of bounds (a low-impact write-out-of-bounds is also possible).

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35684

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

Source Url
CERT-VN https://www.kb.cert.org/vuls/id/608209
CONFIRM https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf
MISC https://www.forescout.com/blog/new-critical-operational-technology-vulnerabil...
https://www.hcc-embedded.com

Alert History

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0
1
Date Informations
2021-08-26 21:23:12
  • Multiple Updates
2021-08-19 17:22:50
  • First insertion