CVE-2020-10594 : Exploit Details and Defense Strategies

An issue was discovered in drf-jwt 1.15.x before 1.15.1, allowing attackers to obtain a new token via the refresh endpoint.

Understanding CVE-2020-10594

What is CVE-2020-10594?

CVE-2020-10594 is a vulnerability found in drf-jwt 1.15.x before version 1.15.1, enabling attackers with access to an invalidated token to acquire a new functional token through the refresh endpoint.

The Impact of CVE-2020-10594

This vulnerability poses a security risk by bypassing the blacklist protection mechanism, potentially granting unauthorized access to the system.

Technical Details of CVE-2020-10594

Vulnerability Description

The issue arises from the incompatibility between the blacklist protection mechanism and the token-refresh feature in drf-jwt.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: drf-jwt 1.15.x before 1.15.1

Exploitation Mechanism

Attackers can exploit this vulnerability by utilizing an invalidated token to generate a new operational token via the refresh endpoint.

Mitigation and Prevention

Immediate Steps to Take

Upgrade to drf-jwt version 1.15.1 or later to mitigate the vulnerability.
Monitor and restrict access to the refresh endpoint to authorized entities.

Long-Term Security Practices

Regularly review and update security mechanisms to prevent similar token-related issues.
Implement multi-factor authentication to enhance access control.

Patching and Updates

Ensure timely installation of security patches and updates to address known vulnerabilities.