NextcloudGHSA-VW7G-959G-VJ6QID4me feature of OpenID connect app available even when disabled
6.3 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.5%
Description
Impact
Missing access control on the ID4me endpoint allows an attacker to register an account eventually getting access to data that is available to all registered users.
Patches
It is recommended that the OpenID Connect user backend is upgraded to 3.0.0 (Nextcloud 20-23), 4.0.0 (Nexcloud 24) or 5.0.0 (Nextcloud 25-28)
Workarounds
- Disable app user_oidc
References
For more information
If you have any questions or comments about this advisory:
- Create a post in nextcloud/security-advisories
- Customers: Open a support ticket at portal.nextcloud.com
Related
6.3 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.5%