Vulnerability Details : CVE-2023-25818
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.
Products affected by CVE-2023-25818
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*
- cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*
- Nextcloud » Nextcloud Server » Enterprise EditionVersions from including (>=) 24.0.0 and before (<) 24.0.10cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
- Nextcloud » Nextcloud Server » Enterprise EditionVersions from including (>=) 21.0.0 and before (<) 21.0.9.10cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
- Nextcloud » Nextcloud Server » Enterprise EditionVersions from including (>=) 22.0.0 and before (<) 22.2.10.10cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
- Nextcloud » Nextcloud Server » Enterprise EditionVersions from including (>=) 25.0.0 and before (<) 25.0.4cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
- Nextcloud » Nextcloud Server » Enterprise EditionVersions from including (>=) 23.0.0 and before (<) 23.0.12.5cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-25818
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 27 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-25818
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N |
2.8
|
4.2
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2023-25818
-
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2023-25818
-
https://github.com/nextcloud/server/pull/36489
Add bruteforce protection to password reset page by nickvergessen · Pull Request #36489 · nextcloud/server · GitHubIssue Tracking
-
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp
Missing brute force protection on password reset token · Advisory · nextcloud/security-advisories · GitHubVendor Advisory
-
https://github.com/nextcloud/server/pull/36489/commits/704eb3aa6cecc0a646f5cca4290b595f493f9ed3
Add bruteforce protection to password reset page by nickvergessen · Pull Request #36489 · nextcloud/server · GitHubPatch
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