CVE-2021-43963 : Security Advisory and Response
Learn about CVE-2021-43963 impacting Couchbase Sync Gateway 2.7.0 through 2.8.2. Unauthorized users can exploit stored credentials to gain write access. Find mitigation steps and patching details here.
Couchbase Sync Gateway 2.7.0 through 2.8.2 insecurely stores bucket credentials in sync documents, allowing users with read access to gain write access.
Understanding CVE-2021-43963
What is CVE-2021-43963?
An issue in Couchbase Sync Gateway allows unauthorized users to exploit stored credentials in sync documents.
The Impact of CVE-2021-43963
This vulnerability enables potential unauthorized write access to Couchbase Server data.
Technical Details of CVE-2021-43963
Vulnerability Description
The issue arises from insecure storage of bucket credentials within sync documents.
Affected Systems and Versions
- Versions 2.7.0 through 2.8.2 of Couchbase Sync Gateway
Exploitation Mechanism
Unauthorized users can leverage stored credentials to obtain unauthorized write access.
Mitigation and Prevention
Immediate Steps to Take
- Ensure immediate patching of affected versions.
- Review and restrict access permissions to sensitive data.
Long-Term Security Practices
- Implement secure credential storage and management practices.
- Regularly monitor and audit access to prevent unauthorized actions.
Patching and Updates
Apply vendor-provided patches for Couchbase Sync Gateway to address this vulnerability.