CVE-2020-10758 : Security Advisory and Response

A vulnerability in Keycloak before 11.0.1 allows for a DoS attack by sending multiple requests with a Content-Length header exceeding the actual byte count.

Understanding CVE-2020-10758

This CVE involves a denial of service vulnerability in Keycloak before version 11.0.1.

What is CVE-2020-10758?

The vulnerability in Keycloak before 11.0.1 enables a DoS attack by sending multiple requests with a Content-Length header value that surpasses the actual byte count of the request body.

The Impact of CVE-2020-10758

The vulnerability could lead to a denial of service condition, potentially disrupting the availability of the Keycloak server.

Technical Details of CVE-2020-10758

This section provides more technical insights into the CVE.

Vulnerability Description

The flaw in Keycloak before 11.0.1 allows attackers to perform a DoS attack by sending twenty requests simultaneously with a Content-Length header value exceeding the actual byte count of the request body.

Affected Systems and Versions

Product: Keycloak
Versions Affected: Keycloak before 11.0.1

Exploitation Mechanism

Attackers can exploit this vulnerability by sending multiple requests to the Keycloak server with manipulated Content-Length header values.

Mitigation and Prevention

Protecting systems from CVE-2020-10758 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Keycloak to version 11.0.1 or later to mitigate the vulnerability.
Monitor network traffic for any unusual patterns that could indicate a DoS attack.

Long-Term Security Practices

Implement rate limiting on incoming requests to prevent DoS attacks.
Regularly review and update security configurations to address emerging threats.

Patching and Updates

Apply patches and updates provided by Keycloak promptly to address security vulnerabilities.