CVE-2019-13290 : What You Need to Know

Artifex MuPDF 1.15.0 has a vulnerability in the function fz_append_display_node, leading to a heap-based buffer overflow. Attackers can exploit this flaw remotely by using a specially crafted PDF file.

Understanding CVE-2019-13290

This CVE entry describes a critical vulnerability in Artifex MuPDF 1.15.0 that allows remote code execution through a heap-based buffer overflow.

What is CVE-2019-13290?

The vulnerability in Artifex MuPDF 1.15.0 arises from a heap-based buffer overflow in the function fz_append_display_node located in the file fitz/list-device.c. This security flaw enables attackers to execute arbitrary code remotely by leveraging a manipulated PDF file.

The Impact of CVE-2019-13290

The heap-based buffer overflow in Artifex MuPDF 1.15.0 poses a severe risk as it allows remote attackers to execute malicious code through a crafted PDF file. This can lead to unauthorized access, data theft, and system compromise.

Technical Details of CVE-2019-13290

Artifex MuPDF 1.15.0's vulnerability involves a specific function and file, affecting remote code execution through a PDF file.

Vulnerability Description

The flaw in the function fz_append_display_node in Artifex MuPDF 1.15.0 results in a heap-based buffer overflow, triggered by an excessively large BDC property name. This overflow causes the allocated size of a display list node to be exceeded, enabling attackers to execute arbitrary code.

Affected Systems and Versions

Product: Artifex MuPDF 1.15.0
Vendor: Artifex
Versions: All versions are affected

Exploitation Mechanism

Attackers exploit the vulnerability by creating a PDF file with a large BDC property name, causing an overflow in the allocated size of a display list node. This manipulation allows them to execute arbitrary code remotely.

Mitigation and Prevention

To address CVE-2019-13290 and enhance system security, follow these mitigation strategies:

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on safe browsing habits and email security.
Keep software and systems updated to prevent known vulnerabilities.
Employ intrusion detection and prevention systems to enhance threat detection.
Consider implementing application whitelisting to control executable files.

Patching and Updates

Regularly check for updates and patches from Artifex to address security vulnerabilities.
Apply patches as soon as they are released to mitigate the risk of exploitation.