What it is about

Apache Commons ist ein Apache-Projekt, das alle Aspekte der wiederverwendbaren Java-Komponenten behandelt. Apache Tomcat ist ein Web-Applikationsserver für verschiedene Plattformen. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Apache Commons und Apache Tomcat ausnutzen, um einen Denial of Service Angriff durchzuführen.

Under what conditions?

Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.

What can happen in the worst case

An attacker could use the vulnerability to

• einen Denial of Service Angriff durchzuführen

Am I affected?

Affected according to the BSI:

• IBM Business Automation Workflow 21.0.2
• IBM Business Automation Workflow 21.0.3
• IBM Business Automation Workflow 22.0.1
• Debian Linux
• IBM WebSphere Service Registry and Repository 8.5
• IBM Tivoli Monitoring 6.3.0.7
• IBM Business Automation Workflow 18.0.0.0
• IBM Business Automation Workflow 18.0.0.1
• Amazon Linux 2
• IBM Business Automation Workflow 18.0.0.2
• IBM Business Automation Workflow 19.0.0.1
• Apache Tomcat

and 48 more

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

• Apache Commons FileUpload 1.5
• IBM Tivoli Netcool/OMNIbus 8.1.0 FP30
• IBM Tivoli Business Service Manager 6.2.0.5
• Dell NetWorker 19.9.0.1
• IBM Rational Change 5.3.2.6
• Red Hat JBoss Web Server 5.7.4
• IBM Rational Build Forge 8.0.0.24

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.