#VU49114 Server-Side Request Forgery (SSRF) in Keycloak - CVE-2020-10770
Published: December 15, 2020 / Updated: November 25, 2021
Vulnerability identifier: #VU49114
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2020-10770
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Keycloak
Keycloak
Software vendor:
Keycloak
Keycloak
Description
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input passed via the "OIDC" parameter. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Remediation
Install updates from vendor's website.