(Pwn2Own) Inductive Automation Ignition Deserialization of Untrusted Data Remote Code Execution Vulnerability

July 15th, 2022
ZDI-22-1017 ZDI-CAN-17265

CVE ID

CVE-2022-35870

CVSS Score

8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Inductive Automation

Affected Products

Ignition

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Inductive Automation Ignition. 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.

Additional Details

Inductive Automation has issued an update to correct this vulnerability. More details can be found at:
https://support.inductiveautomation.com/hc/en-us/articles/7625759776653-Regarding-Pwn2Own-2022-Vulnerabilities

Disclosure Timeline

  • 2022-05-09 - Vulnerability reported to vendor
  • 2022-07-15 - Coordinated public release of advisory

Credit

@_s_n_t of @pentestltd

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