38 lines
1.2 KiB
Markdown
38 lines
1.2 KiB
Markdown
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---
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stage: Secure
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group: Dynamic Analysis
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# AspNetMvc header exposes version information
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## Description
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The target website returns AspNet header(s) along with version information of this website. By
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exposing these values attackers may attempt to identify if the target software is vulnerable to known
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vulnerabilities. Or catalog known sites running particular versions to exploit in the future when a
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vulnerability is identified in the particular version.
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## Remediation
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To remove the `X-AspNetMvc-Version` information set `MvcHandler.DisableMvcResponseHeader = true;` in the
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`Global.asax.cs` file in the `Application_Start()` method.
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```cs
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protected void Application_Start()
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{
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MvcHandler.DisableMvcResponseHeader = true;
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}
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```
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## Details
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| ID | Aggregated | CWE | Type | Risk |
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|:---|:--------|:--------|:--------|:--------|
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| 16.6 | true | 16 | Passive | Low |
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## Links
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- [CWE](https://cwe.mitre.org/data/definitions/16.html)
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- [IIS Remove Unwanted Headers](https://techcommunity.microsoft.com/t5/iis-support-blog/remove-unwanted-http-response-headers/ba-p/369710)
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