// For flags

CVE-2021-37628

File Drop can be bypassed using Richdocuments app in nextcloud

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Nextcloud Richdocuments is an open source collaborative office suite. In affected versions the File Drop features ("Upload Only" public link shares in Nextcloud) can be bypassed using the Nextcloud Richdocuments app. An attacker was able to read arbitrary files in such a share. It is recommended that the Nextcloud Richdocuments is upgraded to 3.8.4 or 4.2.1. If upgrading is not possible then it is recommended to disable the Richdocuments application.

Nextcloud Richdocuments es una suite de oficina colaborativa de código abierto. En las versiones afectadas, las características de File Drop (enlaces públicos compartidos "Upload Only" en Nextcloud) pueden ser omitidas usando la aplicación Nextcloud Richdocuments. Un atacante podía leer archivos arbitrarios en dicho recurso compartido. Se recomienda actualizar Nextcloud Richdocuments a la versión 3.8.4 o 4.2.1. Si la actualización no es posible, se recomienda deshabilitar la aplicación Richdocuments

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-07-29 CVE Reserved
  • 2021-09-07 CVE Published
  • 2024-05-23 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-639: Authorization Bypass Through User-Controlled Key
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nextcloud
Search vendor "Nextcloud"
 Richdocuments
Search vendor "Nextcloud" for product "Richdocuments"
 < 3.8.4
Search vendor "Nextcloud" for product "Richdocuments" and version " < 3.8.4"
-
Affected
Nextcloud
Search vendor "Nextcloud"
 Richdocuments
Search vendor "Nextcloud" for product "Richdocuments"
 >= 4.0.0 < 4.2.1
Search vendor "Nextcloud" for product "Richdocuments" and version " >= 4.0.0 < 4.2.1"
-
Affected