CVE-2023-25818
First published: Mon Mar 27 2023(Updated: )
Nextcloud server is an open source, personal cloud implementation. In affected versions a malicious user could try to reset the password of another user and then brute force the 62^21 combinations for the password reset token. As of commit `704eb3aa` password reset attempts are now throttled. Note that 62^21 combinations would significant compute resources to brute force. None the less it is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. There are no known workarounds for this vulnerability.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Nextcloud Server | >=21.0.0<21.0.9.10 | |
| Nextcloud Nextcloud Server | >=22.0.0<22.2.10.10 | |
| Nextcloud Nextcloud Server | >=23.0.0<23.0.12.5 | |
| Nextcloud Nextcloud Server | >=24.0.0<24.0.10 | |
| Nextcloud Nextcloud Server | >=24.0.0<24.0.10 | |
| Nextcloud Nextcloud Server | >=25.0.0<25.0.4 | |
| Nextcloud Nextcloud Server | >=25.0.0<25.0.4 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-25818?
CVE-2023-25818 is a vulnerability in Nextcloud Server, where a malicious user could reset the password of another user and attempt to brute force the password reset token.
What is the severity of CVE-2023-25818?
CVE-2023-25818 has a severity rating of 7.1 (high).
Which versions of Nextcloud Server are affected by CVE-2023-25818?
CVE-2023-25818 affects Nextcloud Server versions 21.0.0 to 21.0.9.10, 22.0.0 to 22.2.10.10, 23.0.0 to 23.0.12.5, 24.0.0 to 24.0.10, and 25.0.0 to 25.0.4.
How can I fix CVE-2023-25818?
To fix CVE-2023-25818, it is recommended to update Nextcloud Server to the latest available version. Make sure to review the official Nextcloud security advisory (link provided) for more detailed instructions.
Is there any additional information about CVE-2023-25818?
Yes, you can find more information about CVE-2023-25818 in the official Nextcloud security advisory (link provided).
- collector/nvd-index
- vendor/nextcloud
- canonical/nextcloud nextcloud server
- version/nextcloud nextcloud server/21.0.0
- version/nextcloud nextcloud server/22.0.0
- version/nextcloud nextcloud server/23.0.0
- version/nextcloud nextcloud server/24.0.0
- version/nextcloud nextcloud server/25.0.0