Nextcloud Server up to 24.0.9/25.0.3 Password Reset Token excessive authentication

Summaryinfo

A vulnerability was found in Nextcloud Server up to 24.0.9/25.0.3 and classified as problematic. This issue affects some unknown processing of the component Password Reset Token Handler. Executing a manipulation can lead to excessive authentication. The identification of this vulnerability is CVE-2023-25818. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Nextcloud Server up to 24.0.9/25.0.3 (Cloud Software). This vulnerability affects an unknown code of the component Password Reset Token Handler. The manipulation with an unknown input leads to a excessive authentication vulnerability. The CWE definition for the vulnerability is CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The weakness was shared 03/27/2023 as GHSA-v243-x6jc-42mp. The advisory is available at github.com. This vulnerability was named CVE-2023-25818 since 02/15/2023. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1110.001 by the MITRE ATT&CK project.

Upgrading to version 24.0.10 or 25.0.4 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Cloud Software

Vendor

• Nextcloud

Name

• Server

Version

• 24.0.0
• 24.0.1
• 24.0.2
• 24.0.3
• 24.0.4
• 24.0.5
• 24.0.6
• 24.0.7
• 24.0.8
• 24.0.9
• 25.0.0
• 25.0.1
• 25.0.2
• 25.0.3

License

• open-source

Website

• Product: https://github.com/nextcloud/server/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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