CVE-2022-35870 Deserialization in Ignition

High 8.8 Published 25 Jul 2022 Updated 3 Aug 2024

Remote attackers can execute arbitrary code with SYSTEM privileges via unsafe deserialization in Ignition, bypassing authentication.

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

What is CVE-2022-35870?

CVE-2022-35870 is a high-severity unsafe deserialization vulnerability in Inductive Automation Ignition, published on 25 Jul 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Inductive Automation Ignition 8.1.15 (b2022030114). Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within com.inductiveautomation.metro.impl. 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-17265.

Weakness: CWE-502

Which versions are affected by CVE-2022-35870?

It affects 1 product.

Products include Inductiveautomation Ignition.

How do I fix CVE-2022-35870?

No fix has been published for CVE-2022-35870 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-2022-35870 being exploited?

There is no known exploitation of CVE-2022-35870 in the wild and no public exploit code.

Sources

Also known as GHSA-9rc3-8phx-mfxx.