CVE-2018-19059 : Exploit Details and Defense Strategies

A vulnerability has been found in Poppler 0.71.0 that can lead to a denial of service due to an out-of-bounds read in EmbFile::save2 in FileSpec.cc.

Understanding CVE-2018-19059

This CVE entry highlights a specific vulnerability in the Poppler software version 0.71.0.

What is CVE-2018-19059?

The vulnerability in Poppler 0.71.0 allows for an out-of-bounds read in EmbFile::save2 in FileSpec.cc, potentially resulting in a denial of service. The issue is exemplified in utils/pdfdetach.cc, where embedded files are not adequately validated before save attempts.

The Impact of CVE-2018-19059

The vulnerability can be exploited to cause a denial of service, impacting the availability of the affected system.

Technical Details of CVE-2018-19059

This section delves into the technical aspects of the CVE entry.

Vulnerability Description

The vulnerability in Poppler 0.71.0 arises from an out-of-bounds read in EmbFile::save2 in FileSpec.cc, which can be leveraged for a denial of service attack.

Affected Systems and Versions

Affected Version: Poppler 0.71.0
Systems using this version are vulnerable to the exploit.

Exploitation Mechanism

The vulnerability can be exploited by manipulating embedded files in a way that triggers the out-of-bounds read, leading to a denial of service.

Mitigation and Prevention

Protective measures to address and prevent the CVE-2018-19059 vulnerability.

Immediate Steps to Take

Update Poppler to a patched version that addresses the out-of-bounds read issue.
Monitor system logs for any unusual activity that might indicate exploitation.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security audits to identify and mitigate vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories and updates from Poppler and related vendors.
Implement a robust patch management process to ensure timely application of fixes.