CVE-2020-1748 Incorrect Authorization in WildFly Elytron

What is CVE-2020-1748?

CVE-2020-1748 is a high-severity missing authorization vulnerability in Wildfly, published on 16 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in all supported versions before wildfly-elytron-1.6.8.Final-redhat-00001, where the WildFlySecurityManager checks were bypassed when using custom security managers, resulting in an improper authorization. This flaw leads to information exposure by unauthenticated access to secure resources.

Which versions are affected by CVE-2020-1748?

2 open source packages ship an affected version, including org.wildfly.security:wildfly-elytron. It affects 3 products.

Products include Redhat Decision Manager, Redhat Process Automation, Redhat Wildfly Elytron.

How do I fix CVE-2020-1748?

Upgrade org.wildfly.security:wildfly-elytron to 1.6.8 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-1748 being exploited?

There is no known exploitation of CVE-2020-1748 in the wild and no public exploit code.

Other vulnerabilities in Wildfly

• CVE-2019-14841 Privilege escalation in Business-central High 8.8
• CVE-2022-1415 Drools: unsafe data deserialization in streamutils High 8.1
• CVE-2019-14840 Information disclosure in Business-central High 7.5
• CVE-2017-7545 XML External Entity Reference in jbpmmigration Medium 6.5
• CVE-2019-14886 Information disclosure in Business-central Medium 4.6

Sources

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

Also known as GHSA-qgrq-cx4c-2rmm.