CVE-2021-22895

Public Exploit

Description

Nextcloud Desktop Client before 3.3.1 is vulnerable to improper certificate validation due to lack of SSL certificate verification when using the "Register with a Provider" flow.

References

Link	Tags
https://hackerone.com/reports/903424	third party advisory issue tracking exploit
https://github.com/nextcloud/desktop/pull/2926	third party advisory patch
https://github.com/nextcloud/desktop/releases/tag/v3.1.3	third party advisory release notes
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qpgp-vf4p-wcw5	third party advisory
https://www.debian.org/security/2021/dsa-4974	third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-22895?: CVE-2021-22895 has been scored as a medium severity vulnerability.
How to fix CVE-2021-22895?: To fix CVE-2021-22895, 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-2021-22895 being actively exploited in the wild?: It is possible that CVE-2021-22895 is being exploited or will be exploited in a near future based on public information. 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-2021-22895?: CVE-2021-22895 affects n/a Nextcloud Desktop Client.

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Description

Category

CWE-295 – Improper Certificate Validation

References

Frequently Asked Questions