CVE-2019-5855 : What You Need to Know

A vulnerability related to integer overflow was discovered in PDFium, a component used in Google Chrome versions prior to 76.0.3809.87. This vulnerability could potentially be exploited by a remote attacker through a carefully crafted PDF file, leading to potential heap corruption.

Understanding CVE-2019-5855

This CVE involves an integer overflow vulnerability in PDFium within Google Chrome versions before 76.0.3809.87.

What is CVE-2019-5855?

The CVE-2019-5855 vulnerability is an integer overflow issue found in PDFium, a component utilized in Google Chrome versions preceding 76.0.3809.87. It could be abused by a remote attacker via a specifically crafted PDF file, potentially causing heap corruption.

The Impact of CVE-2019-5855

The vulnerability could allow a remote attacker to exploit heap corruption in systems running affected versions of Google Chrome, potentially leading to security breaches and unauthorized access.

Technical Details of CVE-2019-5855

This section provides technical insights into the CVE-2019-5855 vulnerability.

Vulnerability Description

The vulnerability in PDFium in Google Chrome before version 76.0.3809.87 enables a remote attacker to potentially exploit heap corruption by using a maliciously crafted PDF file.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: Prior to 76.0.3809.87

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker through a carefully crafted PDF file, leveraging the integer overflow issue in PDFium.

Mitigation and Prevention

To address CVE-2019-5855 and enhance system security, follow these mitigation and prevention measures:

Immediate Steps to Take

Update Google Chrome to version 76.0.3809.87 or later to mitigate the vulnerability.
Avoid opening PDF files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and applications to the latest versions to patch known vulnerabilities.
Implement network security measures to detect and prevent potential attacks leveraging PDF vulnerabilities.

Patching and Updates

Apply security patches and updates provided by Google promptly to ensure protection against known vulnerabilities.