CVE-2019-3560 : What You Need to Know

CVE-2019-3560 is a vulnerability in the PlaintextRecordLayer of the fizz library, potentially leading to a denial-of-service attack. This CVE affects all versions of fizz released before v2019.03.04.00.

Understanding CVE-2019-3560

This CVE highlights a critical issue in the buffer length calculation within the PlaintextRecordLayer of the fizz library, which could result in an endless loop and denial-of-service.

What is CVE-2019-3560?

The vulnerability in CVE-2019-3560 arises from an inaccurate buffer length calculation, leading to a potential denial-of-service attack.

The Impact of CVE-2019-3560

The impact of this vulnerability is the possibility of an attacker causing a denial-of-service by exploiting the inaccurate buffer length calculation in the PlaintextRecordLayer.

Technical Details of CVE-2019-3560

Vulnerability Description

The vulnerability in the PlaintextRecordLayer of the fizz library could allow an attacker to trigger an endless loop, resulting in a denial-of-service condition.

Affected Systems and Versions

Vendor: Facebook
Product: fizz
Affected Versions:
v2019.03.04.00 and earlier
Custom versions less than v2019.03.04.00

Exploitation Mechanism

The vulnerability can be exploited by providing malicious input that triggers the inaccurate buffer length calculation, leading to the denial-of-service condition.

Mitigation and Prevention

Immediate Steps to Take

Update to the latest version of fizz (v2019.03.04.00 or newer) to mitigate the vulnerability.
Implement input validation to prevent malicious inputs that could trigger the vulnerability.

Long-Term Security Practices

Regularly monitor and update software libraries to address known vulnerabilities.
Conduct security assessments and code reviews to identify and mitigate similar issues.

Patching and Updates

Apply patches and updates provided by the vendor to address the vulnerability in the fizz library.