CVE-2020-1901 Explained : Impact and Mitigation

WhatsApp for iOS prior to v2.20.91.4 is affected by a vulnerability that could cause the application to freeze when processing large text messages containing URLs.

Understanding CVE-2020-1901

This CVE describes a specific vulnerability in WhatsApp for iOS.

What is CVE-2020-1901?

The vulnerability in WhatsApp for iOS could lead to application freezing when processing messages with URLs prior to version 2.20.91.4.

The Impact of CVE-2020-1901

The impact involves a denial-of-service scenario where the application freezes when handling specific message content.

Technical Details of CVE-2020-1901

CVE-2020-1901 entails specific technical details of the vulnerability.

Vulnerability Description

The vulnerability involves uncontrolled resource consumption due to processing of large text messages with URLs.

Affected Systems and Versions

Product: WhatsApp for iOS
Vendor: Facebook
Affected Versions:
2.20.91.4 and prior versions
Custom versions less than 2.20.91.4

Exploitation Mechanism

The vulnerability can be exploited by sending a large text message containing URLs to the affected application.

Mitigation and Prevention

Guidance to address and prevent exploitation of CVE-2020-1901.

Immediate Steps to Take

Update to version 2.20.91.4 or later of WhatsApp for iOS
Be cautious with messages containing excessive URLs

Long-Term Security Practices

Stay vigilant for security advisories and updates
Regularly update applications to latest versions

Patching and Updates

To mitigate the CVE-2020-1901 vulnerability, patching is essential. Ensure timely updates to WhatsApp for iOS to protect against potential freezing issues.