Vulnerability · Published Aug 10, 2023 · Assigned by GitHub_M
CVE-2023-39958Missing brute force protection on password reset token OAuth2 API controller
Medium 5.8
In plain English
A medium-severity security flaw in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Official description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, missing protection allows an attacker to brute force the client secrets of configured OAuth2 clients. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | >= 22.0.0, < 22.2.10.13>= 23.0.0, < 23.0.12.8>= 24.0.0, < 24.0.12.5>= 25.0.0, < 25.0.9>= 26.0.0, < 26.0.4>= 27.0.0, < 27.0.1 |
Weakness: CWE-307 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vv27-g2hq-v48h x_refsource_CONFIRM
- https://github.com/nextcloud/server/pull/38773 x_refsource_MISC
- https://hackerone.com/reports/1258448 x_refsource_MISC