APPNET0066 - .NET default proxy settings must be reviewed and approved - applications

Information

The .Net framework can be configured to utilize a different proxy or altogether bypass the default proxy settings in the client's browser. This may lead to the framework using a proxy that is not approved for use. If the proxy is malicious, this could lead to a loss of application integrity and confidentiality.

Solution

Open Windows explorer and search for all '*.exe.config' and 'machine.config' files.

Search each file for the 'defaultProxy' element.

Clear the values contained in the 'defaultProxy' element, and the 'bypasslist', 'module', and 'proxy' child elements.

The IAO must provide documented approvals of any non-default proxy servers.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_DotNet_Framework_4-0_V2R2_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|III, CCI|CCI-000366, Rule-ID|SV-225234r864037_rule, STIG-ID|APPNET0066, STIG-Legacy|SV-41014, STIG-Legacy|V-30972, Vuln-ID|V-225234

Plugin: Windows

Control ID: ada6bf834049ecf8030e8b1b6450c86d9184418916e0bc45bb185df6683e50a1