CVE-2019-7310 : What You Need to Know

Poppler version 0.73.0 has a vulnerability that triggers a heap-based buffer over-read due to an integer signedness error in the XRef::getEntry function in XRef.cc. This flaw allows remote attackers to potentially cause a denial of service or exploit other impacts by using a crafted PDF document.

Understanding CVE-2019-7310

Poppler 0.73.0 vulnerability with potential denial of service and exploitation risks.

What is CVE-2019-7310?

Heap-based buffer over-read vulnerability in Poppler 0.73.0
Caused by an integer signedness error in XRef::getEntry function
Enables remote attackers to trigger denial of service or exploit other impacts
Exploitable via a crafted PDF document like pdftocairo

The Impact of CVE-2019-7310

Allows remote attackers to potentially cause a denial of service
May lead to application crashes or other unspecified impacts

Technical Details of CVE-2019-7310

Details on the vulnerability and its implications.

Vulnerability Description

Heap-based buffer over-read due to integer signedness error
Found in the XRef::getEntry function in XRef.cc
Enables remote attackers to exploit the vulnerability

Affected Systems and Versions

Poppler version 0.73.0
All systems using this specific version are vulnerable

Exploitation Mechanism

Crafted PDF document, such as pdftocairo, can exploit the vulnerability

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2019-7310 vulnerability.

Immediate Steps to Take

Update Poppler to a non-vulnerable version
Be cautious when opening PDF documents from untrusted sources

Long-Term Security Practices

Regularly update software and apply security patches
Implement network security measures to prevent remote attacks

Patching and Updates

Check for security updates from Poppler and apply them promptly