CVE-2019-9587 : Vulnerability Insights and Analysis

Xpdf 4.01's md5Round1() function has a stack consumption issue that can be exploited through a crafted PDF file, leading to a Denial of Service or other consequences.

Understanding CVE-2019-9587

Xpdf 4.01 vulnerability impacting the md5Round1() function.

What is CVE-2019-9587?

The vulnerability in Xpdf 4.01's Decrypt.cc file allows for a stack consumption problem when a specially crafted PDF file is processed by the pdfimages binary, potentially resulting in a Denial of Service (Segmentation fault) or other unspecified outcomes. This issue is specifically linked to Catalog::countPageTree.

The Impact of CVE-2019-9587

The vulnerability can lead to a Denial of Service condition or potentially enable attackers to cause other adverse effects on the system.

Technical Details of CVE-2019-9587

Details on the technical aspects of the vulnerability.

Vulnerability Description

The md5Round1() function in Decrypt.cc in Xpdf 4.01 has a stack consumption problem that can be triggered by processing a carefully crafted PDF file, potentially leading to a Denial of Service or other consequences.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability can be exploited by providing a maliciously crafted PDF file to the pdfimages binary, triggering the stack consumption issue.

Mitigation and Prevention

Ways to address and prevent the CVE-2019-9587 vulnerability.

Immediate Steps to Take

Avoid processing PDF files from untrusted or unknown sources.
Implement file type and content validation mechanisms.
Monitor system logs for any unusual activities related to PDF file processing.

Long-Term Security Practices

Keep software and applications updated to mitigate known vulnerabilities.
Conduct regular security assessments and audits to identify and address potential weaknesses.

Patching and Updates

Check for patches or updates from Xpdf to address the stack consumption issue in the md5Round1() function.