CVE-2022-1704 : Exploit Details and Defense Strategies

This article discusses CVE-2022-1704, a vulnerability found in the Inductive Automation Ignition software that could lead to a XML external entity attack during backup/restore.

Understanding CVE-2022-1704

This section dives into the details of the CVE, covering its impact, technical description, affected systems, and mitigation steps.

What is CVE-2022-1704?

The vulnerability in Inductive Automation Ignition arises from the inadequate handling of XML external entity references during XML parsing within the backup/restore feature.

The Impact of CVE-2022-1704

With a CVSS base score of 7.6, this vulnerability poses a high risk to confidentiality, requiring high privileges but no user interaction for exploitation.

Technical Details of CVE-2022-1704

Let's take a closer look at the technical aspects of this CVE.

Vulnerability Description

The XXE vulnerability allows an attacker to execute malicious XML payloads during backup/restore processes, potentially leading to data exposure.

Affected Systems and Versions

Inductive Automation Ignition versions up to 8.1.7 and all versions prior to 7.9.21 are impacted by this vulnerability, making systems susceptible to XXE attacks.

Exploitation Mechanism

Exploiting this vulnerability involves crafting a malicious XML payload and initiating the backup or restore process to trigger the XXE attack.

Mitigation and Prevention

To safeguard systems from CVE-2022-1704, it is crucial to implement the following security measures.

Immediate Steps to Take

Upgrade the Ignition software to the latest versions: 8.1.9 or later, and 7.9.21 or later, as recommended by Inductive Automation.

Long-Term Security Practices

Regularly monitor for security updates and patches from the vendor to stay protected against emerging threats.

Patching and Updates

Ensure timely installation of software updates and patches to address known vulnerabilities and enhance system security.