What it is about

Jackson ist eine quelloffene Bibliothek zur JSON-Verarbeitung in Java. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in FasterXML Jackson ausnutzen, um Schutzmechanismen und Autorisierungsregeln zu umgehen, Daten zu manipulieren, Informationen offenzulegen oder einen Denial-of-Service zu verursachen.

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

• Schutzmechanismen
• Autorisierungsregeln zu umgehen
• Daten zu manipulieren
• Informationen offenzulegen oder einen Denial-of-Service zu verursachen

Am I affected?

Affected according to the BSI:

• Red Hat Enterprise Linux
• Fedora Linux
• SUSE Linux
• IBM Operational Decision Manager
• IBM Tivoli Network Manager IP Edition
• IBM SPSS Modeler
• SUSE openSUSE
• IBM MQ Operator
• IBM Integration Bus
• IBM Business Automation Workflow
• NetApp ActiveIQ Unified Manager
• RESF Rocky Linux

and 11 more

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

What helps?

Update to at least:

• FasterXML Jackson 2.21.4
• FasterXML Jackson 3.1.4
• FasterXML Jackson 2.14.0
• FasterXML Jackson 2.18.8
• FasterXML Jackson 2.18.9
• FasterXML Jackson 2.21.5
• Dell Secure Connect Gateway 5.36.00.16

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.