6.5 - CVE-2021-37630

Executive Summary

Informations
Name	CVE-2021-37630	First vendor Publication	2021-09-07
Vendor	Cve	Last vendor Modification	2021-09-14

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Overall CVSS Score	6.5
Base Score	6.5	Environmental Score	6.5
impact SubScore	3.6	Temporal Score	6.5
Exploitabality Sub Score	2.8

Attack Vector	Network	Attack Complexity	Low
Privileges Required	Low	User Interaction	None
Scope	Unchanged	Confidentiality Impact	High
Integrity Impact	None	Availability Impact	None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:P/I:N/A:N)
Cvss Base Score	4	Attack Range	Network
Cvss Impact Score	2.9	Attack Complexity	Low
Cvss Expoit Score	8	Authentication	Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Nextcloud Circles is an open source social network built for the nextcloud ecosystem. In affected versions the Nextcloud Circles application allowed any user to join any "Secret Circle" without approval by the Circle owner leaking private information. It is recommended that Nextcloud Circles is upgraded to 0.19.15, 0.20.11 or 0.21.4. There are no workarounds for this issue.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37630

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-639	Access Control Bypass Through User-Controlled Key

CPE : Common Platform Enumeration

Type	Description	Count
Application	Nextcloud Circles cpe:2.3:a:nextcloud:circles::::::::	1

Sources (Detail)

Source	Url
CONFIRM	https://github.com/nextcloud/security-advisories/security/advisories/GHSA-56j...
MISC	https://github.com/nextcloud/circles/pull/768 https://hackerone.com/reports/1257624