CVE-2021-42763 : Security Advisory and Response

Couchbase Server before 6.6.3 and 7.x before 7.0.2 stores Sensitive Information in Cleartext. The issue arises when the cluster manager forwards an HTTP request from the pluggable UI to a specific service, exposing user credentials in the Basic Auth Header.

Understanding CVE-2021-42763

This CVE involves the storage of sensitive information in plain text within Couchbase Server versions before 6.6.3 and 7.x before 7.0.2.

What is CVE-2021-42763?

The vulnerability results from the transmission of user credentials over HTTP requests, revealing sensitive data in the Basic Auth Header.

The Impact of CVE-2021-42763

The exposure of sensitive information in clear text can lead to unauthorized access and potential data breaches, compromising user security and confidentiality.

Technical Details of CVE-2021-42763

The technical aspects of the CVE provide insight into the vulnerability's nature and its implications.

Vulnerability Description

Couchbase Server versions prior to 6.6.3 and 7.x before 7.0.2 fail to encrypt sensitive data, allowing credentials to be visible in the Basic Auth Header of forwarded HTTP requests.

Affected Systems and Versions

Affected Systems: Couchbase Server versions before 6.6.3 and 7.x prior to 7.0.2

Exploitation Mechanism

The vulnerability occurs when the cluster manager routes HTTP requests from the pluggable UI to a specific service, inadvertently disclosing user credentials in the request's Basic Auth Header.

Mitigation and Prevention

Addressing and preventing CVE-2021-42763 is crucial to safeguard systems and data.

Immediate Steps to Take

Upgrade Couchbase Server to version 6.6.3 or 7.0.2 to mitigate the vulnerability.
Avoid transmitting sensitive information over unencrypted channels.

Long-Term Security Practices

Implement end-to-end encryption for data in transit to prevent interception.
Regularly review and update security policies to encompass new threats and vulnerabilities.

Patching and Updates

Apply security patches and updates provided by Couchbase to address vulnerabilities and enhance system security.