CVE-2023-38089 - Kofax Power PDF clearInterval Out-Of-Bounds Write Remote Code Execution Vulnerability

Introduction: The Kofax Power PDF clearInterval Out-Of-Bounds Write Remote Code Execution Vulnerability is a critical security flaw that allows remote attackers to execute arbitrary code on affected installations of Kofax Power PDF. This vulnerability specifically exists due to improper validation of user-supplied data, potentially causing a write past the end of an allocated buffer. User interaction is required to exploit this vulnerability, as the target must either visit a malicious page or open a malicious file.

Exploit Details: This vulnerability, identified as CVE-2023-38089, was previously reported as ZDI-CAN-20567. The issue stems from the handling of app objects within Kofax Power PDF. The lack of proper validation of user-supplied data can lead to an out-of-bounds write, enabling an attacker to execute code in the context of the current process.

Original References

- CVE-2023-38089 Vulnerability Details
- ZDI-CAN-20567 Advisory

Here's a sample code snippet that demonstrates how an attacker could exploit this vulnerability

// Malicious Code Example

var malicious_interval = setInterval(function () {

   // Attacker-controlled data sent to vulnerable app object
   var attacker_data = '...'; // Some payload that causes an out-of-bounds write

   // Vulnerable app object, assumed to be part of Kofax Power PDF
   var vulnerable_app_object = '...'; // Placeholder for the actual app object

   // Simulate sending attacker-controlled data to the vulnerable app object
   vulnerable_app_object.someFunction(attacker_data);

}, 100);

// After some time or predefined condition
clearInterval(malicious_interval);

Given the severity of this vulnerability, it's crucial for users and administrators to apply patches provided by Kofax and follow best security practices to minimize the risk of exploitation.

Mitigation Strategies

1. Ensure that you're running the latest version of Kofax Power PDF and apply all available security patches.

Avoid visiting untrusted websites or opening files from unknown sources.

3. Utilize security solutions such as antivirus software and firewalls to protect against known threats.
4. Educate users about safe browsing habits and risks of downloading attachments from unsolicited emails.

In summary, CVE-2023-38089 is a critical security vulnerability within Kofax Power PDF that allows remote attackers to execute arbitrary code on affected installations. Users and administrators should apply available security patches, follow best practices, and exercise caution to mitigate the risk of exploitation.

Timeline

Published on: 05/03/2024 02:15:50 UTC
Last modified on: 06/04/2024 17:28:11 UTC