CVE-2023-2664 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2023-2664, a vulnerability identified in Xpdf 4.04 and earlier versions.

Understanding CVE-2023-2664

CVE-2023-2664 refers to a vulnerability in Xpdf 4.04 and prior versions that can result in a stack overflow due to an object loop in the PDF embedded file tree.

What is CVE-2023-2664?

The CVE-2023-2664 vulnerability exists in Xpdf 4.04 and earlier versions, where a PDF object loop in the embedded file tree triggers infinite recursion, leading to a stack overflow.

The Impact of CVE-2023-2664

The impact of CVE-2023-2664 is rated as low severity, with a CVSS v3.1 base score of 2.9. The attack complexity is high, and the attack vector is local. While the availability impact is low, there is no impact on confidentiality or integrity. No special privileges are required for exploitation, and user interaction is not needed.

Technical Details of CVE-2023-2664

The following technical details outline the vulnerability in Xpdf 4.04:

Vulnerability Description

The vulnerability in Xpdf 4.04 and earlier versions arises from a PDF object loop within the embedded file tree, causing infinite recursion and resulting in a stack overflow.

Affected Systems and Versions

The affected product is Xpdf, specifically version 4.04. All platforms are susceptible to this vulnerability.

Exploitation Mechanism

The exploitation of CVE-2023-2664 involves leveraging the PDF object loop in the embedded file tree to induce infinite recursion, ultimately leading to a stack overflow.

Mitigation and Prevention

To address CVE-2023-2664 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Users should update Xpdf to a patched version that resolves the PDF object loop vulnerability.
Employ caution when accessing PDF files from untrusted sources to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software applications, including Xpdf, to incorporate the latest security patches and enhancements.
Implement robust security measures and access controls to prevent unauthorized access and exploitation.

Patching and Updates

Vendor patches and updates for Xpdf should be promptly applied to remediate the vulnerability and enhance system security.

By understanding the nature and impact of CVE-2023-2664 and implementing appropriate security measures, organizations and users can safeguard their systems against potential exploitation.