CVE-2023-39954

high

Description

user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, an attacker that obtained at least read access to a snapshot of the database can impersonate the Nextcloud server towards linked servers. user_oidc 1.3.3 contains a patch. No known workarounds are available.

References

https://hackerone.com/reports/1994328

https://github.com/nextcloud/user_oidc/pull/636

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3f92-5c8p-f6gq

Details

Source: Mitre, NVD

Published: 2023-08-10

Updated: 2023-08-16

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High