CVE-2021-35946 Explained : Impact and Mitigation
Learn about CVE-2021-35946, a security flaw in ownCloud versions prior to 10.8 that enables unauthorized users to elevate their permissions. Find out how to mitigate this risk.
A receiver of a federated share with access to the database with ownCloud version before 10.8 could update the permissions and therefore elevate their own permissions.
Understanding CVE-2021-35946
This CVE identifies a vulnerability in ownCloud that allows a user to manipulate permissions through a federated share, potentially elevating their privileges.
What is CVE-2021-35946?
CVE-2021-35946 describes a scenario where an attacker with access to the ownCloud database prior to version 10.8 can modify permissions to increase their authorization levels.
The Impact of CVE-2021-35946
Exploiting this vulnerability could lead to unauthorized access to sensitive data and functionalities within the ownCloud environment, posing a significant security risk to organizations using affected versions.
Technical Details of CVE-2021-35946
This section outlines the specific technical aspects of the vulnerability.
Vulnerability Description
The vulnerability allows a receiver of a federated share in ownCloud versions below 10.8 to escalate their permissions by tampering with the database.
Affected Systems and Versions
All ownCloud instances running versions earlier than 10.8 are susceptible to this privilege escalation vulnerability.
Exploitation Mechanism
Attackers can exploit this issue by leveraging their access to a federated share in the database to manipulate permissions and gain higher privileges.
Mitigation and Prevention
To address CVE-2021-35946, immediate action and long-term security practices are crucial.
Immediate Steps to Take
Users should update their ownCloud installations to version 10.8 or higher to mitigate the risk of unauthorized privilege escalation.
Long-Term Security Practices
Regularly monitor and audit permissions within the ownCloud environment to detect and prevent unauthorized modifications.
Patching and Updates
Stay informed about security advisories and promptly apply patches released by ownCloud to safeguard against known vulnerabilities.