CVE-2020-6513 : Security Advisory and Response

Heap buffer overflow in PDFium in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file.

Understanding CVE-2020-6513

Heap buffer overflow vulnerability in Google Chrome.

What is CVE-2020-6513?

CVE-2020-6513 is a heap buffer overflow vulnerability found in PDFium in Google Chrome versions prior to 84.0.4147.89. It could be exploited by a remote attacker through a specially crafted PDF file.

The Impact of CVE-2020-6513

Severity: High
Attack Vector: Network
CVSS Score: 8.8 (High)
Confidentiality, Integrity, and Availability Impact

Technical Details of CVE-2020-6513

Heap buffer overflow vulnerability details.

Vulnerability Description

The vulnerability in PDFium in Google Chrome allowed a remote attacker to exploit heap corruption by using a malicious PDF file.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 84.0.4147.89

Exploitation Mechanism

The vulnerability could be exploited by a remote attacker through a crafted PDF file, potentially leading to heap corruption.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2020-6513 vulnerability.

Immediate Steps to Take

Update Google Chrome to version 84.0.4147.89 or higher.
Avoid opening PDF files from untrusted or unknown sources.
Implement network security measures to detect and block malicious PDF files.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Educate users on safe browsing practices and the risks associated with opening files from unknown sources.

Patching and Updates

Google released a patch in version 84.0.4147.89 to address the heap buffer overflow vulnerability in PDFium.