CVE-2023-39475 Deserialization in Ignition

Critical 9.8 Published 3 May 2024 Updated 2 Aug 2024

Remote attackers can execute arbitrary code with SYSTEM privileges via unsafe deserialization in Ignition, requiring no authentication.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-39475?

CVE-2023-39475 is a critical unsafe deserialization vulnerability in Inductive Automation Ignition, published on 3 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Inductive Automation Ignition ParameterVersionJavaSerializationCodec Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Inductive Automation Ignition. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the ParameterVersionJavaSerializationCodec class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-20290.

Weakness: CWE-502

Which versions are affected by CVE-2023-39475?

It affects 1 product.

Products include Inductiveautomation Ignition.

How do I fix CVE-2023-39475?

No fix has been published for CVE-2023-39475 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2023-39475 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-39475 exists.

Sources

Also known as GHSA-5w76-2v5j-77r4.