Executive Summary

Informations
Name CVE-2021-3512 First vendor Publication 2021-04-28
Vendor Cve Last vendor Modification 2021-05-12

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.8
Base Score 8.8 Environmental Score 8.8
impact SubScore 5.9 Temporal Score 8.8
Exploitabality Sub Score 2.8
 
Attack Vector Adjacent Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:A/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 8.3 Attack Range Adjacent network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 6.5 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Improper access control vulnerability in Buffalo broadband routers (BHR-4GRV firmware Ver.1.99 and prior, DWR-HP-G300NH firmware Ver.1.83 and prior, HW-450HP-ZWE firmware Ver.1.99 and prior, WHR-300HP firmware Ver.1.99 and prior, WHR-300 firmware Ver.1.99 and prior, WHR-G301N firmware Ver.1.86 and prior, WHR-HP-G300N firmware Ver.1.99 and prior, WHR-HP-GN firmware Ver.1.86 and prior, WPL-05G300 firmware Ver.1.87 and prior, WZR-450HP-CWT firmware Ver.1.99 and prior, WZR-450HP-UB firmware Ver.1.99 and prior, WZR-HP-AG300H firmware Ver.1.75 and prior, WZR-HP-G300NH firmware Ver.1.83 and prior, WZR-HP-G301NH firmware Ver.1.83 and prior, WZR-HP-G302H firmware Ver.1.85 and prior, WZR-HP-G450H firmware Ver.1.89 and prior, WZR-300HP firmware Ver.1.99 and prior, WZR-450HP firmware Ver.1.99 and prior, WZR-600DHP firmware Ver.1.99 and prior, WZR-D1100H firmware Ver.1.99 and prior, FS-HP-G300N firmware Ver.3.32 and prior, FS-600DHP firmware Ver.3.38 and prior, FS-R600DHP firmware Ver.3.39 and prior, and FS-G300N firmware Ver.3.13 and prior) allows remote unauthenticated attackers to bypass access restriction and to start telnet service and execute arbitrary OS commands with root privileges via unspecified vectors.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3512

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 2
Os 2
Os 2
Os 1
Os 1
Os 1
Os 2
Os 2
Os 2
Os 1
Os 2
Os 1
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2

Sources (Detail)

Source Url
MISC https://jvn.jp/en/vu/JVNVU99235714/index.html
https://www.buffalo.jp/news/detail/20210427-01.html

Alert History

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Date Informations
2021-05-12 21:23:18
  • Multiple Updates
2021-04-29 01:10:24
  • Multiple Updates
2021-04-29 01:10:21
  • Multiple Updates
2021-04-28 17:22:52
  • Multiple Updates
2021-04-28 09:22:57
  • First insertion