CVE-2021-43777 : Vulnerability Insights and Analysis

Redash is a package used for data visualization and sharing. In version 10.0 and earlier, a vulnerability exists in the implementation of Google Login via OAuth, allowing for potential Cross-Site Request Forgery (CSRF) attacks.

Understanding CVE-2021-43777

Redash versions 10.0 and prior contain a security issue related to how the

state

parameter is used in Google Login, potentially leading to CSRF vulnerabilities.

What is CVE-2021-43777?

Redash's incorrect utilization of the

state

parameter in Google Login poses a CSRF risk.
Users bypass the vulnerability if Google Login is not in use for their Redash instance.

The Impact of CVE-2021-43777

CVSS Score: 6.8 (Medium)
Severity: High confidentiality and integrity impacts
The vulnerability requires low privileges but with high attack complexity on the network.
Attackers could manipulate the predictable

state

parameter to conduct CSRF attacks.

Technical Details of CVE-2021-43777

In-depth technical insights into the Redash vulnerability.

Vulnerability Description

The issue lies in Google Login's mishandling of the

state

parameter, which should provide a CSRF token but instead exposes a predictable value.

Affected Systems and Versions

Affected Product: Redash
Vendor: getredash
Vulnerable Versions: <= 10.0

Exploitation Mechanism

Attackers exploit the misuse of the

state

parameter to carry out Cross-Site Request Forgery attacks.

Mitigation and Prevention

Measures to address and prevent the CVE-2021-43777 vulnerability.

Immediate Steps to Take

Patch Redash by upgrading to the fixed versions (master and release/10.x.x).
Disable Google Login as a temporary workaround to mitigate the vulnerability.

Long-Term Security Practices

Enhance security awareness among users to detect and report suspicious activities.
Regularly update Redash and other software components to address vulnerabilities.

Patching and Updates

Apply the provided patch that replaces

Flask-Oauthlib

with

Authlib

for improved security measures.