CVE-2019-6768 : Security Advisory and Response

A security flaw has been discovered in Foxit Reader 9.4.1.16828 that could potentially allow attackers to remotely execute malicious code. The vulnerability lies within the removeField method of the AcroForms processing, enabling attackers to run code within the current process.

Understanding CVE-2019-6768

This CVE identifies a critical vulnerability in Foxit Reader 9.4.1.16828 that could be exploited by malicious actors to execute arbitrary code remotely.

What is CVE-2019-6768?

The vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.1.16828.
User interaction is required, where the target must visit a malicious page or open a malicious file.
The flaw exists within the removeField method during AcroForms processing, due to the lack of validating the existence of an object before performing operations.

The Impact of CVE-2019-6768

CVSS Score: 7 (High Severity)
Attack Vector: Local
Attack Complexity: High
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2019-6768

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Type: Use After Free (CWE-416)
Flaw: Lack of validation in the removeField method of AcroForms processing

Affected Systems and Versions

Affected Product: Foxit Reader
Affected Version: 9.4.1.16828

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking users into visiting a compromised webpage or opening a contaminated file.
The flaw allows attackers to execute malicious code within the current process.

Mitigation and Prevention

Protecting systems from CVE-2019-6768 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Foxit Reader to the latest version.
Avoid visiting suspicious websites or opening files from unknown sources.
Implement security awareness training to educate users about phishing attacks.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Use reputable antivirus software to detect and prevent malicious activities.
Employ network segmentation to limit the impact of potential attacks.

Patching and Updates

Foxit has released patches to address this vulnerability. Ensure all systems are updated with the latest security fixes.