CVE-2018-20650 : What You Need to Know

Poppler 0.72.0 has a vulnerability in the FileSpec class that can lead to a denial of service attack. Learn about the impact, affected systems, and mitigation steps.

Understanding CVE-2018-20650

Poppler 0.72.0 vulnerability due to a missing check for the dict data type in the FileSpec class.

What is CVE-2018-20650?

A reachable Object::dictLookup assertion vulnerability in Poppler 0.72.0 can result in a denial of service attack when exploited, as demonstrated in pdfdetach.

The Impact of CVE-2018-20650

The vulnerability allows attackers to cause a denial of service due to the absence of a check for the dict data type.

Technical Details of CVE-2018-20650

Poppler 0.72.0 vulnerability details and affected systems.

Vulnerability Description

The absence of a check for the dict data type in the FileSpec class of Poppler 0.72.0 leads to a reachable Object::dictLookup assertion.

Affected Systems and Versions

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Exploitation Mechanism

Attackers can exploit this vulnerability to trigger a denial of service attack.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2018-20650 vulnerability.

Immediate Steps to Take

Apply security updates provided by the vendor.
Monitor vendor advisories for patches and updates.

Long-Term Security Practices

Regularly update software and apply security patches.
Implement network segmentation and access controls.

Patching and Updates

Refer to vendor advisories for patching instructions and updates.