Summary

Acunetix 360 identified a version disclosure (Undertow Web Server) in target web server's HTTP response. Undertow is a flexible performant web server written in java, providing both blocking and non-blocking API's based on NIO.

This information can help an attacker gain a greater understanding of the systems in use and potentially develop further attacks targeted at the specific version of Undertow Web Server.

Impact

An attacker might use the disclosed information to harvest specific security vulnerabilities for the version identified.

Remediation

Configure your web server to prevent information leakage from the X-Powered-By header of its HTTP response.

Severity

Low

Classification

CAPEC-170 CWE-205 HIPAA-164.306(a) 164.308(a) ISO27001-A.18.1.3 WASC-45 OWASP 2013-A5 OWASP 2017-A6