CVE-2018-16647 : Vulnerability Insights and Analysis
Learn about CVE-2018-16647, a vulnerability in Artifex MuPDF 1.13.0 that allows attackers to trigger a denial of service attack by exploiting a segmentation fault in the software's function.
Artifex MuPDF version 1.13.0 is susceptible to a denial of service vulnerability that can be exploited by malicious actors. By triggering a segmentation fault in the fz_write_data function, attackers can execute a DoS attack by loading a specially crafted PDF file.
Understanding CVE-2018-16647
This CVE entry highlights a vulnerability in the Artifex MuPDF software version 1.13.0 that can be exploited to cause a denial of service attack.
What is CVE-2018-16647?
The function pdf_get_xref_entry in Artifex MuPDF version 1.13.0 can be manipulated by attackers to trigger a denial of service attack, potentially leading to a segmentation fault in the fz_write_data function.
The Impact of CVE-2018-16647
The vulnerability allows remote attackers to disrupt the normal operation of the software, potentially causing a crash or unresponsiveness.
Technical Details of CVE-2018-16647
Artifex MuPDF version 1.13.0 is affected by a specific vulnerability that can be exploited by loading a crafted PDF file.
Vulnerability Description
The pdf_get_xref_entry function in Artifex MuPDF version 1.13.0 can be abused to cause a denial of service, resulting in a segmentation fault in the fz_write_data function.
Affected Systems and Versions
- Product: Artifex MuPDF
- Version: 1.13.0
Exploitation Mechanism
Attackers can exploit this vulnerability by loading a specially crafted PDF file, triggering the segmentation fault in the fz_write_data function.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-16647.
Immediate Steps to Take
- Update Artifex MuPDF to a patched version that addresses the vulnerability.
- Avoid opening PDF files from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement network security measures to detect and block malicious PDF files.
Patching and Updates
Ensure that all systems running Artifex MuPDF are updated with the latest security patches to mitigate the risk of exploitation.