ASP.NET 2.0 supports application-specific and global configuration files named web.config. These are XML files which control many application settings and are critical to securing ASP.NET applications.
web.config files typically contain a wealth of information, including database connection parameters and passwords. The default configuration of IIS prevents access to web.config files, so if this vulnerability is reported, it means that either the IIS security settings have been changed from the defaults or that an IIS-based application has been copied over to a non-IIS server such as Apache.
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