CVE-2023-39476

(0Day) Inductive Automation Ignition JavaSerializationCodec Deserialization of Untrusted Data Remote Code Execution Vulnerability

CVE ID CVE-2023-39476

CVSS SCORE 9.8, AV:N/AC:L/PR:N/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. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the JavaSerializationCodec 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.

ADDITIONAL DETAILS

03/10/23 – ZDI reported the vulnerability to the vendor.

03/13/23 – The vendor acknowledged the report.

07/18/23 – The ZDI asked for an update.

08/01/23 – The vendor states the case is under development, but cannot provide a timeline for a fix.

08/01/23 – ZDI informed the vendor that the case will be published as a zero-day advisory on 08/08/23.

Mitigation:  Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the application.

DISCLOSURE TIMELINE

2023-03-10 - Vulnerability reported to vendor

2023-08-08 - Coordinated public release of advisory

2023-08-08 - Advisory Updated

CREDIT Rocco Calvi (@TecR0c) and Steven Seeley (mr_me) of Incite Team