Permission Escalation in ownCloud by a Federated Share Receiver
CVE-2021-35946

9.8CRITICAL

Key Information:

Vendor

Owncloud

Status
Owncloud
Vendor
CVE Published:
7 September 2021

What is CVE-2021-35946?

In ownCloud versions prior to 10.8, a security issue exists where a user receiving a federated share could modify their own access permissions. This flaw enables the unauthorized elevation of permissions, potentially granting users higher access levels than intended, which poses a substantial risk to data integrity and security within the ownCloud environment.

References

https://doc.owncloud.com/server/admin_manual/release_note...
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https://owncloud.com/security-advisories/cve-2021-35946/
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CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.