CVE-2019-13289 : Exploit Details and Defense Strategies

Xpdf version 4.01.01 has a use-after-free vulnerability in the JBIG2Stream::close() function, allowing exploitation via a specially-crafted PDF document.

Understanding CVE-2019-13289

This CVE identifies a specific vulnerability in Xpdf version 4.01.01.

What is CVE-2019-13289?

The vulnerability lies in the JBIG2Stream::close() function within the JBIG2Stream.cc file, classified as a use-after-free vulnerability. Attackers can exploit this by sending a malicious PDF to the pdftoppm tool.

The Impact of CVE-2019-13289

This vulnerability can lead to arbitrary code execution or denial of service if successfully exploited.

Technical Details of CVE-2019-13289

Xpdf version 4.01.01 is affected by this vulnerability.

Vulnerability Description

The use-after-free vulnerability in the JBIG2Stream::close() function allows attackers to execute arbitrary code or cause a denial of service.

Affected Systems and Versions

Product: Xpdf
Version: 4.01.01

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially-crafted PDF document to the pdftoppm tool.

Mitigation and Prevention

To address CVE-2019-13289, follow these steps:

Immediate Steps to Take

Update Xpdf to a patched version.
Avoid opening PDFs from untrusted sources.

Long-Term Security Practices

Regularly update software to the latest versions.
Implement network security measures to detect and block malicious PDFs.

Patching and Updates

Ensure timely installation of security patches and updates for Xpdf to mitigate the risk of exploitation.