NextcloudGHSA-WFQV-CX85-7RJXNotes app can be tricked into using a received share created before the user logged in
4.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.5%
Description
Impact
If an attacker managed to share a folder called Notes/ with a newly created user before they logged in, the Notes app would use that folder store the personal notes.
Patches
It is recommended that the Nextcloud Notes app is upgraded to 4.9.3
Workarounds
- Disable Notes app
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
4.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
6.5 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.5%