CVE-2020-10705 : What You Need to Know

Undertow in versions before Undertow 2.1.1.Final is affected by a flaw that can lead to a denial of service due to an out of memory error triggered by specific requests to the "Expect: 100-continue" header.

Understanding CVE-2020-10705

Undertow vulnerability impacting versions before 2.1.1.Final.

What is CVE-2020-10705?

This CVE identifies a vulnerability in Undertow versions prior to 2.1.1.Final that allows certain requests to the "Expect: 100-continue" header to potentially cause an out of memory error, leading to a denial of service.

The Impact of CVE-2020-10705

The vulnerability may result in a denial of service due to uncontrolled resource consumption.

Technical Details of CVE-2020-10705

Undertow vulnerability details.

Vulnerability Description

A flaw in Undertow versions before 2.1.1.Final can be exploited by specific requests to the "Expect: 100-continue" header, potentially causing an out of memory error and leading to a denial of service.

Affected Systems and Versions

Product: Undertow
Vendor: n/a
Versions affected: Versions before Undertow 2.1.1.Final

Exploitation Mechanism

The vulnerability is triggered by certain requests to the "Expect: 100-continue" header, resulting in uncontrolled resource consumption and a potential denial of service.

Mitigation and Prevention

Steps to address CVE-2020-10705.

Immediate Steps to Take

Update Undertow to version 2.1.1.Final or later to mitigate the vulnerability.
Monitor system resources for any unusual spikes in memory consumption.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Implement network security measures to detect and block malicious requests.

Patching and Updates

Apply patches and updates provided by Undertow to address the vulnerability and enhance system security.