Nextcloud Richdocuments up to 3.8.3/4.2.0 File Drop 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.
5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Nextcloud Richdocuments up to 3.8.3/4.2.0 and classified as critical. This affects an unknown part of the component File Drop Handler. The manipulation leads to authorization. This vulnerability is traded as CVE-2021-37628. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Nextcloud Richdocuments up to 3.8.3/4.2.0 (Cloud Software) and classified as critical. This issue affects an unknown part of the component File Drop Handler. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality.

The weakness was shared 09/08/2021. The advisory is shared at hackerone.com. The identification of this vulnerability is CVE-2021-37628. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.8.4 or 4.2.1 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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Richdocuments 3.8.4/4.2.1
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-2021-37628 (🔍)
GCVE (CVE): GCVE-0-2021-37628
GCVE (VulDB): GCVE-100-182129

Entryinfo

Created: 09/08/2021 07:28
Updated: 09/10/2021 11:45
Changes: 09/08/2021 07:28 (63), 09/10/2021 11:38 (2), 09/10/2021 11:45 (1)
Complete: 🔍
Cache ID: 216::103

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

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