Executive Summary

Informations
Name CVE-2021-37631 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

Deck is an open source kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. In affected versions the Deck application didn't properly check membership of users in a Circle. This allowed other users in the instance to gain access to boards that have been shared with a Circle, even if the user was not a member of the circle. It is recommended that Nextcloud Deck is upgraded to 1.5.1, 1.4.4 or 1.2.9. If you are unable to update it is advised to disable the Deck plugin.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37631

CWE : Common Weakness Enumeration

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

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 3

Sources (Detail)

Source Url
CONFIRM https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4mx...
MISC https://github.com/nextcloud/deck/pull/3217
https://hackerone.com/reports/1256021
https://hackerone.com/reports/1280931

Alert History

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0
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Date Informations
2021-09-14 21:23:19
  • Multiple Updates
2021-09-08 17:22:48
  • Multiple Updates
2021-09-08 00:22:48
  • First insertion