CVE-2021-39224

File path disclosure of shared files in OfficeOnline application

Description

Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud OfficeOnline application prior to version 1.1.1 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file `shared.txt` is located within `/files/$username/Myfolder/Mysubfolder/shared.txt`). It is recommended that the OfficeOnline application is upgraded to 1.1.1. As a workaround, one may disable the OfficeOnline application in the app settings.

Category

3.5
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.21%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-56wm-r6jm-3v9h third party advisory
https://github.com/nextcloud/officeonline/pull/204 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-39224?
CVE-2021-39224 has been scored as a low severity vulnerability.
How to fix CVE-2021-39224?
To fix CVE-2021-39224, 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-2021-39224 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-39224 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-2021-39224?
CVE-2021-39224 affects nextcloud security-advisories.
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