Nextcloud Deck up to 1.2.8/1.4.3/1.5.0 Circle Membership authorization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Nextcloud Deck up to 1.2.8/1.4.3/1.5.0. Affected is an unknown function of the component Circle Membership Handler. This manipulation causes authorization. This vulnerability is tracked as CVE-2021-37631. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Nextcloud Deck up to 1.2.8/1.4.3/1.5.0 (Cloud Software) and classified as problematic. Affected by this vulnerability is an unknown code of the component Circle Membership Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. As an impact it is known to affect confidentiality.

The weakness was disclosed 09/08/2021. The advisory is shared at hackerone.com. This vulnerability is known as CVE-2021-37631. Neither technical details nor an exploit are publicly available.

Upgrading to version 1.2.9, 1.4.4 or 1.5.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Deck 1.2.9/1.4.4/1.5.1
Patch: github.com

Timelineinfo

07/29/2021 🔍
09/08/2021 +41 days 🔍
09/08/2021 +0 days 🔍
09/10/2021 +2 days 🔍

Sourcesinfo

Product: github.com

Advisory: hackerone.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-37631 (🔍)
GCVE (CVE): GCVE-0-2021-37631
GCVE (VulDB): GCVE-100-182137

Entryinfo

Created: 09/08/2021 07:55
Updated: 09/10/2021 13:35
Changes: 09/08/2021 07:55 (61), 09/10/2021 13:24 (2), 09/10/2021 13:29 (1), 09/10/2021 13:35 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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