CVE-2020-10770 : What You Need to Know

Keycloak before 13.0.0 allows an SSRF attack via an unverified URL in the OIDC parameter request_uri.

Understanding CVE-2020-10770

Keycloak vulnerability enabling SSRF attacks.

What is CVE-2020-10770?

This CVE identifies a vulnerability in Keycloak versions prior to 13.0.0 that permits attackers to trigger an SSRF attack by manipulating the request_uri OIDC parameter.

The Impact of CVE-2020-10770

The flaw allows malicious actors to force the server to make requests to arbitrary URLs, potentially leading to unauthorized access or data leakage.

Technical Details of CVE-2020-10770

Key technical aspects of the vulnerability.

Vulnerability Description

Keycloak's vulnerability allows attackers to exploit the request_uri parameter to execute SSRF attacks.

Affected Systems and Versions

Vendor: n/a
Product: Keycloak
Affected Version: Keycloak 13.0.0

Exploitation Mechanism

Attackers manipulate the request_uri parameter to trick the server into making unauthorized requests, potentially leading to SSRF attacks.

Mitigation and Prevention

Protective measures against CVE-2020-10770.

Immediate Steps to Take

Update Keycloak to version 13.0.0 or later to mitigate the vulnerability.
Monitor and restrict outgoing requests from the server to prevent SSRF attacks.

Long-Term Security Practices

Implement strict input validation to prevent manipulation of parameters.
Regularly audit and review server configurations to identify and address potential vulnerabilities.

Patching and Updates

Apply security patches promptly to ensure that known vulnerabilities are addressed and system security is maintained.