CVE-2020-7816 Explained : Impact and Mitigation

A vulnerability in the JPEG image parsing module in DaView Indy, DaVa+, DaOffice software could allow an unauthenticated, remote attacker to cause arbitrary code execution on an affected device. The vulnerability is due to a stack overflow read, which could be exploited by sending a crafted PDF file to the device.

Understanding CVE-2020-7816

This CVE identifies a critical vulnerability in the DaView Indy, DaVa+, DaOffice software that could lead to remote code execution.

What is CVE-2020-7816?

The CVE-2020-7816 vulnerability is a stack-based buffer overflow issue in the JPEG image parsing module of the mentioned software products.

The Impact of CVE-2020-7816

The vulnerability has a high severity level with a CVSS base score of 7. It can result in high impacts on confidentiality, integrity, and availability of the affected systems. An attacker can exploit this flaw without requiring any privileges.

Technical Details of CVE-2020-7816

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in the JPEG image parsing module allows an attacker to trigger a stack overflow read, leading to arbitrary code execution.

Affected Systems and Versions

Affected Products: DaView Indy, DaVa+, DaOffice
Vendor: HUMAN TALK
Affected Version: <= v8.995 (unspecified, custom version)

Exploitation Mechanism

An attacker can exploit this vulnerability by sending a specially crafted PDF file to the targeted device, triggering the stack overflow read.

Mitigation and Prevention

Protecting systems from CVE-2020-7816 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users about safe browsing habits and email security.
Keep software and systems up to date with the latest security updates.
Employ intrusion detection and prevention systems.
Consider implementing application whitelisting to control executable files.

Patching and Updates

Regularly check for security updates and patches released by HUMAN TALK for the affected products to mitigate the vulnerability.