CVE-2020-10719 : Exploit Details and Defense Strategies

Undertow before 2.1.1.Final allows attackers to exploit HTTP request smuggling, posing medium severity risks.

Understanding CVE-2020-10719

A vulnerability in Undertow versions before 2.1.1.Final enables attackers to manipulate HTTP requests, potentially leading to security breaches.

What is CVE-2020-10719?

This CVE identifies a flaw in Undertow versions before 2.1.1.Final that mishandles invalid HTTP requests with large chunk sizes, creating an opportunity for HTTP request smuggling attacks.

The Impact of CVE-2020-10719

The vulnerability has a CVSS base score of 6.5 (Medium severity) and affects the confidentiality and integrity of systems, allowing attackers to exploit the HTTP request smuggling issue.

Technical Details of CVE-2020-10719

Undertow's vulnerability before version 2.1.1.Final has the following technical details:

Vulnerability Description

Undertow versions before 2.1.1.Final mishandle invalid HTTP requests with large chunk sizes
Attackers can exploit this flaw for HTTP request smuggling

Affected Systems and Versions

Product: Undertow
Vendor: Red Hat
Versions affected: Versions before 2.1.1.Final

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Unchanged
Impact: Low confidentiality and integrity impact

Mitigation and Prevention

To address CVE-2020-10719, consider the following steps:

Immediate Steps to Take

Update Undertow to version 2.1.1.Final or later
Monitor and filter incoming HTTP requests for anomalies

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities
Implement network security measures to detect and prevent HTTP request smuggling attacks

Patching and Updates

Apply security patches promptly to address vulnerabilities like the one in Undertow before 2.1.1.Final