CVE-2023-1108 Undertow: infinite loop in sslconduit during close

High 7.5 Published Updated

An attacker can cause a denial of service in Undertow by triggering an infinite loop during SSL connection closure.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2023-1108?

CVE-2023-1108 is a high-severity denial of service vulnerability in Netapp Oncommand Workflow Automation, published on 14 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in undertow. This issue makes achieving a denial of service possible due to an unexpected handshake status updated in SslConduit, where the loop never terminates.

Weakness: CWE-835

Which versions are affected by CVE-2023-1108?

4 open source packages ship an affected version, including io.undertow:undertow-core. It affects 16 products.

PackageAffectedFixed in
io.undertow:undertow-core MavenAll versions2.2.24.Final
io.undertow:undertow-core MavenAll versions2.2.24.Final
io.undertow:undertow-core MavenFrom 2.3.02.3.5.Final
io.undertow:undertow-core MavenFrom 2.3.02.3.5.Final
Linux distribution packages (14)
eap7-undertow Red Hat:jboss_enterprise_application_platform:7.4::el7All versions0:2.2.22-1.SP3_redhat_00002.1.el7eap
eap7-wildfly Red Hat:jboss_enterprise_application_platform:7.4::el7All versions0:7.4.9-6.GA_redhat_00004.1.el7eap
eap7-wildfly-java-jdk11 Red Hat:jboss_enterprise_application_platform:7.4::el7All versions0:7.4.9-6.GA_redhat_00004.1.el7eap
eap7-wildfly-java-jdk8 Red Hat:jboss_enterprise_application_platform:7.4::el7All versions0:7.4.9-6.GA_redhat_00004.1.el7eap
eap7-wildfly-javadocs Red Hat:jboss_enterprise_application_platform:7.4::el7All versions0:7.4.9-6.GA_redhat_00004.1.el7eap
eap7-wildfly-modules Red Hat:jboss_enterprise_application_platform:7.4::el7All versions0:7.4.9-6.GA_redhat_00004.1.el7eap
eap7-undertow Red Hat:jboss_enterprise_application_platform:7.4::el8All versions0:2.2.22-1.SP3_redhat_00002.1.el8eap
eap7-wildfly Red Hat:jboss_enterprise_application_platform:7.4::el8All versions0:7.4.9-6.GA_redhat_00004.1.el8eap
eap7-wildfly-javadocs Red Hat:jboss_enterprise_application_platform:7.4::el8All versions0:7.4.9-6.GA_redhat_00004.1.el8eap
eap7-wildfly-modules Red Hat:jboss_enterprise_application_platform:7.4::el8All versions0:7.4.9-6.GA_redhat_00004.1.el8eap
eap7-undertow Red Hat:jboss_enterprise_application_platform:7.4::el9All versions0:2.2.22-1.SP3_redhat_00002.1.el9eap
eap7-wildfly Red Hat:jboss_enterprise_application_platform:7.4::el9All versions0:7.4.9-6.GA_redhat_00004.1.el9eap
eap7-wildfly-javadocs Red Hat:jboss_enterprise_application_platform:7.4::el9All versions0:7.4.9-6.GA_redhat_00004.1.el9eap
eap7-wildfly-modules Red Hat:jboss_enterprise_application_platform:7.4::el9All versions0:7.4.9-6.GA_redhat_00004.1.el9eap

Products include Netapp Oncommand Workflow Automation, Redhat Build of Quarkus, Redhat Decision Manager, Redhat Fuse, Redhat Integration Camel K, Redhat Integration Service Registry and 10 more.

How do I fix CVE-2023-1108?

Upgrade io.undertow:undertow-core to a fixed version for your release line: 2.2.24.Final or 2.3.5.Final.

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-2023-1108 being exploited?

There is no known exploitation of CVE-2023-1108 in the wild and no public exploit code.

All Netapp Oncommand Workflow Automation vulnerabilities

Sources

Also known as DEBIAN-CVE-2023-1108, GHSA-m4mm-pg93-fv78, OESA-2023-1202, RHSA-2023:1185, UBUNTU-CVE-2023-1108.

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