CVE-2020-14297 Wildfly EJB Client causes DoS

What is CVE-2020-14297?

CVE-2020-14297 is a medium-severity denial of service vulnerability in Redhat Single Sign-On, published on 24 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A flaw was discovered in Wildfly's EJB Client as shipped with Red Hat JBoss EAP 7, where some specific EJB transaction objects may get accumulated over the time and can cause services to slow down and eventaully unavailable. An attacker can take advantage and cause denial of service attack and make services unavailable.

Weakness: CWE-400

Which versions are affected by CVE-2020-14297?

2 open source packages ship an affected version, including org.jboss:jboss-ejb-client. It affects 6 products.

Products include Redhat Amq, Redhat Jboss-Ejb-Client, Redhat Jboss Enterprise Application Platform Continuous Delivery, Redhat Jboss Fuse, Redhat Openshift Application Runtimes, Redhat Single Sign-On.

How do I fix CVE-2020-14297?

Upgrade org.jboss:jboss-ejb-client to 4.0.34.Final or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-14297 being exploited?

There is no known exploitation of CVE-2020-14297 in the wild and no public exploit code.

Other vulnerabilities in Redhat Single Sign-On

• CVE-2015-5182 Cross-site request forgery in n/a High 8.8
• CVE-2022-1278 WildFly vulnerable to Insecure Default Initialization of Resource High 7.5
• CVE-2015-5183 Security feature bypass in n/a High 7.5
• CVE-2015-5184 Misconfiguration in n/a High 7.5
• CVE-2020-14307 Denial of service in wildfly Medium 6.5

All Redhat Single Sign-On vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qcch-9268-59jw.