CVE-2019-3563 : Security Advisory and Response

Wangle's LineBasedFrameDecoder in versions prior to v2019.04.22.00 has a flaw that may lead to a buffer underflow due to incorrect buffer advancement.

Understanding CVE-2019-3563

This CVE involves a vulnerability in Wangle's LineBasedFrameDecoder logic, potentially causing a buffer underflow.

What is CVE-2019-3563?

The flaw in Wangle's LineBasedFrameDecoder logic can result in incorrect buffer advancement, leading to a possible buffer underflow. This vulnerability affects versions of Wangle before v2019.04.22.00.

The Impact of CVE-2019-3563

The vulnerability could be exploited to trigger a buffer underflow, potentially leading to a denial of service or other security issues.

Technical Details of CVE-2019-3563

This section provides detailed technical information about the CVE.

Vulnerability Description

The flaw in Wangle's LineBasedFrameDecoder logic may cause a buffer underflow due to incorrect buffer advancement.

Affected Systems and Versions

Product: Wangle
Vendor: Facebook
Affected Versions:
v2019.04.22.00 and earlier

Exploitation Mechanism

The vulnerability can be exploited by manipulating the logic in Wangle's LineBasedFrameDecoder to trigger the buffer underflow.

Mitigation and Prevention

Protect your systems from CVE-2019-3563 with the following steps:

Immediate Steps to Take

Update Wangle to version v2019.04.22.00 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update and patch software to ensure the latest security fixes are in place.
Conduct security audits and code reviews to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by Facebook for Wangle to address CVE-2019-3563.