CVE-2020-8844 : Exploit Details and Defense Strategies

This vulnerability in Foxit Reader 9.6.0.25114 allows remote attackers to execute arbitrary code by exploiting a flaw in parsing JPEG files within CovertToPDF.

Understanding CVE-2020-8844

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

What is CVE-2020-8844?

The vulnerability in Foxit Reader 9.6.0.25114 enables attackers to execute arbitrary code by manipulating JPEG files within CovertToPDF, exploiting an integer overflow issue due to inadequate user-supplied data validation.

The Impact of CVE-2020-8844

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

Technical Details of CVE-2020-8844

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper validation of user-supplied data, leading to an integer overflow during memory write operations, allowing attackers to execute code within the current process.

Affected Systems and Versions

Product: Foxit Reader
Vendor: Foxit
Affected Version: 9.6.0.25114

Exploitation Mechanism

To exploit this vulnerability, user interaction is necessary, requiring the victim to access a malicious webpage or open a corrupted file.

Mitigation and Prevention

Protecting systems from CVE-2020-8844 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Foxit Reader to the latest version.
Avoid opening files or visiting websites from untrusted sources.

Long-Term Security Practices

Implement robust data validation mechanisms.
Educate users on safe browsing habits and file handling.

Patching and Updates

Regularly check for security updates and patches from Foxit to address known vulnerabilities.