CVE-2018-5686 Explained : Impact and Mitigation

MuPDF 1.12.0 has a vulnerability in its pdf_parse_array function that could allow remote attackers to cause a denial of service by using a manipulated pdf file.

Understanding CVE-2018-5686

MuPDF 1.12.0 vulnerability leading to a denial of service attack.

What is CVE-2018-5686?

In MuPDF 1.12.0, an infinite loop vulnerability exists in the pdf_parse_array function, causing the application to hang due to the lack of EOF consideration. This flaw could be exploited by remote attackers to trigger a denial of service by utilizing a crafted pdf file.

The Impact of CVE-2018-5686

The vulnerability in MuPDF 1.12.0 could result in a denial of service attack, potentially disrupting the availability of the application.

Technical Details of CVE-2018-5686

Details regarding the vulnerability in MuPDF 1.12.0.

Vulnerability Description

MuPDF 1.12.0 contains an infinite loop vulnerability in the pdf_parse_array function, leading to an application hang.

Affected Systems and Versions

Product: MuPDF 1.12.0
Vendor: N/A
Version: N/A

Exploitation Mechanism

Remote attackers can exploit this vulnerability by using a manipulated pdf file to trigger a denial of service.

Mitigation and Prevention

Ways to address and prevent the CVE-2018-5686 vulnerability.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Avoid opening pdf files from untrusted or unknown sources.
Implement network-level security measures to detect and block malicious pdf files.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Conduct security assessments and audits to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories and updates from MuPDF and related vendors to apply patches as soon as they are available.