CVE-2021-28938 : Security Advisory and Response
Learn about CVE-2021-28938 affecting Siren Federate versions before 7.11.2-23.0. Understand the impact, technical details, and mitigation strategies for this vulnerability.
Siren Federate before 6.8.14-10.3.9, 6.9.x through 7.6.x before 7.6.2-20.2, 7.7.x through 7.9.x before 7.9.3-21.6, 7.10.x before 7.10.2-22.2, and 7.11.x before 7.11.2-23.0 can leak user information across thread contexts. This occurs in opportunistic circumstances when there is concurrent query execution by a low-privilege user and a high-privilege user. The former query might run with the latter query's privileges.
Understanding CVE-2021-28938
This CVE ID is assigned to a vulnerability found in Siren Federate that can lead to the leaking of user information when specific query execution conditions are met.
What is CVE-2021-28938?
CVE-2021-28938 allows for the leak of user information across thread contexts due to concurrent query execution by users with different privilege levels.
The Impact of CVE-2021-28938
The vulnerability could result in unauthorized access to sensitive user data, posing a risk to confidentiality and privacy.
Technical Details of CVE-2021-28938
The following details provide insight into the nature of the vulnerability within Siren Federate.
Vulnerability Description
The vulnerability in affected versions allows user information leakage during specific query executions.
Affected Systems and Versions
Siren Federate versions before 7.11.2-23.0 are impacted by this vulnerability.
Exploitation Mechanism
Exploitation occurs in situations with concurrent query execution by users of varying privilege levels.
Mitigation and Prevention
To safeguard systems and data from CVE-2021-28938, immediate actions and long-term security practices should be implemented.
Immediate Steps to Take
Ensure timely installation of security patches and monitor query executions for signs of unauthorized data access.
Long-Term Security Practices
Regular security audits, user privilege reviews, and access control enhancements can help prevent similar vulnerabilities in the future.
Patching and Updates
Keep Siren Federate updated to the latest version to mitigate the risk of data leakage through thread context exploitation.