CVE-2020-27782 : Vulnerability Insights and Analysis

Undertow versions 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1 are affected by a vulnerability in the AJP connector that could lead to denial of service attacks.

Understanding CVE-2020-27782

What is CVE-2020-27782?

A flaw in the Undertow AJP connector allows attackers to trigger malicious requests and abrupt connection closes, leading to denial of service by using non-RFC compliant characters in query strings.

The Impact of CVE-2020-27782

The primary impact of this vulnerability is on system availability, posing a significant threat to affected systems.

Technical Details of CVE-2020-27782

Vulnerability Description

Undertow AJP connector vulnerability allows for denial of service attacks through malicious requests and connection interruptions.

Affected Systems and Versions

Undertow versions 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1 are affected.

Exploitation Mechanism

Attackers exploit non-RFC compliant characters in query strings to trigger denial of service.

Mitigation and Prevention

Immediate Steps to Take

Apply vendor patches promptly to mitigate the vulnerability.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

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

Patching and Updates

Stay informed about security advisories and updates from Undertow to address vulnerabilities.