CVE-2023-33866 Explained : Impact and Mitigation
Learn about CVE-2023-33866, a high-severity use-after-free vulnerability in Foxit Reader's JavaScript engine (version 12.1.2.15332) that allows arbitrary code execution and its mitigation measures.
A detailed overview of the use-after-free vulnerability in Foxit Reader version 12.1.2.15332, its impact, technical details, and mitigation steps.
Understanding CVE-2023-33866
This section provides insights into the critical vulnerability found in Foxit Reader version 12.1.2.15332.
What is CVE-2023-33866?
A use-after-free vulnerability in the JavaScript engine of Foxit Reader allows an attacker to execute arbitrary code by exploiting freed memory blocks. The attacker can trigger this issue by tricking users into opening a malicious PDF document or visiting a specially crafted website.
The Impact of CVE-2023-33866
The vulnerability poses a high risk as it can lead to arbitrary code execution, potentially compromising the confidentiality, integrity, and availability of the affected system.
Technical Details of CVE-2023-33866
Explore the specific technical aspects of the CVE-2023-33866 vulnerability.
Vulnerability Description
The use-after-free flaw in Foxit Reader version 12.1.2.15332 arises from prematurely deleting objects linked to pages in PDF documents. This action enables an attacker to reuse freed memory blocks, paving the way for unauthorized code execution.
Affected Systems and Versions
Foxit Reader version 12.1.2.15332 is directly impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this flaw by coercing users to interact with malicious PDF files or visit specially crafted websites while having the vulnerable browser plugin extension enabled.
Mitigation and Prevention
Discover the key steps to mitigate and prevent the exploitation of CVE-2023-33866.
Immediate Steps to Take
Users are advised to exercise caution while handling PDF files and to refrain from visiting untrusted websites to prevent potential exploitation of this vulnerability.
Long-Term Security Practices
Regularly update Foxit Reader to the latest version and ensure that browser plugins are disabled unless necessary for secure browsing.
Patching and Updates
Stay informed about security patches released by Foxit Software and promptly apply them to safeguard against known vulnerabilities.