7.5 - CVE-2021-33822

Executive Summary

Informations
Name	CVE-2021-33822	First vendor Publication	2021-06-18
Vendor	Cve	Last vendor Modification	2021-06-24

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 on 4GEE ROUTER HH70VB Version HH70_E1_02.00_22. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33822

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-400	Uncontrolled Resource Consumption ('Resource Exhaustion')

CPE : Common Platform Enumeration

Type	Description	Count
Os	sing4g 4Gee Router Hh70Vb Firmware cpe:2.3:o:sing4g:4gee_router_hh70vb_firmware:hh70_e1_02.00_22:::::::*	1

Sources (Detail)

Source	Url
MISC	https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33822.md https://github.com/shekyan/slowhttptest https://www.sing4g.com/product-page/4gee-router-hh70vb-4g-300mbps-2lan-32wifi