Summary

Acunetix 360 identified a version disclosure (ASP.NET) in target web server's HTTP response.

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 ASP.NET.

Impact

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

Remediation

Apply the following changes to your web.config file to prevent information leakage by using custom error pages and removing X-AspNet-Version from HTTP responses.
<System.Web>
     <httpRuntime enableVersionHeader="false" /> 
     <customErrors mode="On" defaultRedirect="~/error/GeneralError.aspx">
          <error statusCode="403" redirect="~/error/Forbidden.aspx" />
          <error statusCode="404" redirect="~/error/PageNotFound.aspx" />
          <error statusCode="500" redirect="~/error/InternalError.aspx" />
     </customErrors>
</System.Web>

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