CVE-2021-37628

File Drop can be bypassed using Richdocuments app in nextcloud

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.46%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory hackerone.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-pxhh-954f-8w7w third party advisory
https://github.com/nextcloud/richdocuments/pull/1664 third party advisory patch
https://hackerone.com/reports/1253403 third party advisory permissions required

Frequently Asked Questions

What is the severity of CVE-2021-37628?
CVE-2021-37628 has been scored as a high severity vulnerability.
How to fix CVE-2021-37628?
To fix CVE-2021-37628, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-37628 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-37628 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-37628?
CVE-2021-37628 affects nextcloud security-advisories.
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