CVE-2023-39477 Inductive Automation Ignition ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability
Remote attackers can cause denial of service in Inductive Automation Ignition by exhausting resources via OPC UA ConditionRefresh requests without 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-2023-39477?
CVE-2023-39477 is a high-severity denial of service 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 ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Inductive Automation Ignition. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20499.
Weakness: CWE-400
Which versions are affected by CVE-2023-39477?
It affects 1 product.
Products include Inductiveautomation Ignition.
How do I fix CVE-2023-39477?
No fix has been published for CVE-2023-39477 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-39477 being exploited?
There is no known exploitation of CVE-2023-39477 in the wild and no public exploit code.
Other vulnerabilities in Inductive Automation Ignition
Sources
Also known as GHSA-g752-372v-qjj2.