CVE-2021-32800

Bypass of Two Factor Authentication in Nextcloud server

Description

Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory gentoo.org
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gv5w-8q25-785v third party advisory
https://github.com/nextcloud/server/pull/28078 third party advisory patch
https://hackerone.com/reports/1271052 third party advisory permissions required
https://security.gentoo.org/glsa/202208-17 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-32800?
CVE-2021-32800 has been scored as a high severity vulnerability.
How to fix CVE-2021-32800?
To fix CVE-2021-32800, 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-2021-32800 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-32800 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-2021-32800?
CVE-2021-32800 affects nextcloud security-advisories.
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