NextcloudGHSA-HHQ4-4PR8-WM27Potential share collision for recipients when caching is enabled
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
43.8%
Description
Impact
When a recipient receives 2 shares with the same name, while a memory cache is configured, the second share will replace the first one instead of being renamed to … (2)
Patches
It is recommended that the Nextcloud Server is upgraded to 25.0.3 or 24.0.9.
It is recommended that the Nextcloud Enterprise Server is upgraded to 25.0.3 or 24.0.9.
Workarounds
Avoid sharing 2 folders with the same name to the same user.
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 support.nextcloud.com
Related
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
43.8%