CVE-2020-8846 Explained : Impact and Mitigation

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 9.6.0.25114. User interaction is required to exploit this vulnerability.

Understanding CVE-2020-8846

This CVE involves a critical vulnerability in Foxit PhantomPDF that can lead to remote code execution.

What is CVE-2020-8846?

The vulnerability allows attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 9.6.0.25114.
User interaction is necessary, requiring the target to visit a malicious page or open a malicious file.
The flaw lies in the handling of text field objects due to the lack of validating the existence of an object before performing operations on it.

The Impact of CVE-2020-8846

CVSS Score: 7.8 (High)
Attack Vector: Local
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
User Interaction: Required

Technical Details of CVE-2020-8846

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability is categorized as CWE-416: Use After Free.

Affected Systems and Versions

Affected Product: Foxit PhantomPDF
Affected Version: 9.6.0.25114

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking users into visiting a malicious page or opening a malicious file, allowing them to execute arbitrary code.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate action and long-term security practices.

Immediate Steps to Take

Update Foxit PhantomPDF to a patched version.
Avoid visiting suspicious websites or opening unknown files.

Long-Term Security Practices

Regularly update software and security patches.
Educate users on safe browsing habits and file handling.

Patching and Updates

Foxit has released patches to address this vulnerability. Ensure all systems are updated to the latest version of PhantomPDF.