high
8.8
CWE
20
Advisory Published
CVE Published
CVE Published
Advisory Published
Updated

CVE-2020-1714: Input Validation

First published: Fri May 03 2019(Updated: )

A flaw was found in Keycloak before version 11.0.0, where the code base contains usages of ObjectInputStream without type checks. This flaw allows an attacker to inject arbitrarily serialized Java Objects, which would then get deserialized in a privileged context and potentially lead to remote code execution.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
maven/org.keycloak:keycloak-common<11.0.0
11.0.0
maven/org.keycloak:keycloak-core<11.0.0
11.0.0
Redhat Keycloak<11.0.0
Redhat Decision Manager=7.0
Redhat Jboss Fuse=7.0.0
Redhat Openshift Application Runtimes
Redhat Process Automation=7.0
Redhat Single Sign-on=7.0
Quarkus Quarkus<=1.4.2

Remedy

https://github.com/keycloak/keycloak/pull/7053

Remedy

There is currently no known mitigation for this issue.

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-1714?

    CVE-2020-1714 is a vulnerability in Keycloak that allows an attacker to inject arbitrarily serialized Java Objects.

  • What is the severity of CVE-2020-1714?

    The severity of CVE-2020-1714 is high with a CVSS score of 8.8.

  • How does CVE-2020-1714 affect Keycloak before version 11.0.0?

    CVE-2020-1714 affects Keycloak before version 11.0.0 by allowing the code base to contain usages of ObjectInputStream without type checks.

  • How can an attacker exploit CVE-2020-1714?

    An attacker can exploit CVE-2020-1714 by injecting arbitrarily serialized Java Objects, which will get deserialized in a privileged context and potentially lead to remote code execution.

  • How to fix CVE-2020-1714?

    To fix CVE-2020-1714, it is recommended to upgrade Keycloak to version 11.0.0 or higher.

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