CVE-2020-1904 : Exploit Details and Defense Strategies

A path validation issue in WhatsApp for iOS and WhatsApp Business for iOS versions prior to 2.20.61 could allow directory traversal overwriting files when sending specific file types as attachments to messages.

Understanding CVE-2020-1904

This CVE relates to a path validation vulnerability in WhatsApp for iOS and WhatsApp Business for iOS.

What is CVE-2020-1904?

The CVE-2020-1904 vulnerability refers to a flaw in WhatsApp for iOS and WhatsApp Business for iOS versions prior to 2.20.61 that could enable attackers to perform directory traversal attacks.

The Impact of CVE-2020-1904

Attackers could potentially overwrite files on the target device by sending carefully crafted docx, xlsx, and pptx files as attachments in messages through WhatsApp.

Technical Details of CVE-2020-1904

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows for files to be overwritten due to a path validation issue in WhatsApp for iOS and WhatsApp Business for iOS.

Affected Systems and Versions

WhatsApp for iOS prior to v2.20.61
WhatsApp Business for iOS prior to v2.20.61

Exploitation Mechanism

Attacker sends malicious docx, xlsx, or pptx files as attachments in messages on WhatsApp for iOS or WhatsApp Business for iOS

Mitigation and Prevention

Learn how to mitigate the impact of CVE-2020-1904.

Immediate Steps to Take

Update WhatsApp for iOS and WhatsApp Business for iOS to version 2.20.61 or newer
Avoid opening attachments from unknown or untrusted sources

Long-Term Security Practices

Regularly update your apps and devices to the latest versions
Educate users on safe file handling practices and awareness of phishing attempts

Patching and Updates

Check for and apply software updates regularly to ensure the latest security patches are in place