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Shares are not removed when user is limited to share with in their groups and being removed from one of them

Low
nickvergessen published GHSA-35gc-jc6x-29cm Nov 15, 2024

Package

Server (Nextcloud)

Affected versions

>= 28.0.0, >= 29.0.0

Patched versions

28.0.9, 29.0.5
Server (Nextcloud Enterprise)
>= 26.0.0, >= 27.0.0, >= 28.0.0, >= 29.0.0
26.0.13.9, 27.1.11.9, 28.0.9, 29.0.5

Description

Impact

When a server is configured to only allow sharing with users that are in ones own groups, after a user was removed from a group, previously shared items were not unshared.

Patches

It is recommended that the Nextcloud Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6
It is recommended that the Nextcloud Enterprise Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6

Workarounds

  • No workaround available

References

For more information

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Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N

CVE ID

CVE-2024-52516

Weaknesses