Vulnerability · Published Nov 21, 2023 · Assigned by GitHub_M
CVE-2023-48304Nextcloud Server vulnerable to attacker enabling/disabling birthday calendar for any user
Medium 4.3
In plain English
A medium-severity authorization bypass via user-controlled key 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 0.6% (higher than 49% of all known vulnerabilities).
Official description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and starting in version 22.0.0 and prior to versions 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Enterprise Server, an attacker could enable and disable the birthday calendar for any user on the same server. Nextcloud Server 25.0.11, 26.0.6, and 27.1.0 and Nextcloud Enterprise Server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 contain patches for this issue. No known workarounds are available.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | >= 25.0.0, < 25.0.11>= 26.0.0, < 26.0.6>= 27.0.0, < 27.1.0>= 22.0.0, < 22.2.10.16>= 23.0.0, < 23.0.12.11>= 24.0.0, < 24.0.12.7 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8jwv-c8c8-9fr3 x_refsource_CONFIRM
- https://github.com/nextcloud/server/pull/40292 x_refsource_MISC
- https://hackerone.com/reports/2112973 x_refsource_MISC