CVE-2021-3642 Observable Discrepancy in Wildfly Elytron

What is CVE-2021-3642?

CVE-2021-3642 is a medium-severity vulnerability in Redhat Jboss Enterprise Application Platform, published on 5 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A flaw was found in Wildfly Elytron in versions prior to 1.10.14.Final, prior to 1.15.5.Final and prior to 1.16.1.Final where ScramServer may be susceptible to Timing Attack if enabled. The highest threat of this vulnerability is confidentiality.

Weakness: CWE-203

Which versions are affected by CVE-2021-3642?

6 open source packages ship an affected version, including org.wildfly.security:wildfly-elytron. It affects 13 products.

Products include Quarkus Quarkus, Redhat Build of Quarkus, Redhat Codeready Studio, Redhat Data Grid, Redhat Descision Manager, Redhat Integration Camel K and 7 more.

How do I fix CVE-2021-3642?

Upgrade org.wildfly.security:wildfly-elytron to a fixed version for your release line: 1.10.14, 1.15.5 or 1.16.1.

Is CVE-2021-3642 being exploited?

There is no known exploitation of CVE-2021-3642 in the wild and no public exploit code.

Other vulnerabilities in Redhat Jboss Enterprise Application Platform

• CVE-2022-4116 Code injection in quarkus dev ui config editor Critical 9.8
• CVE-2022-2466 Quarkus does not terminate HTTP requests header context Critical 9.8
• CVE-2024-12225 Io.quarkus:quarkus-security-webauthn: quarkus webauthn unexpected authentication bypass Critical 9.1
• CVE-2026-39852 Quarkus authorization bypass via semicolon path normalization inconsistency High 8.8
• CVE-2022-0981 Privilege escalation in quarkus High 8.8

All Redhat Jboss Enterprise Application Platform vulnerabilities

Sources

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

Also known as GHSA-5499-qjvh-6j7w.