Microsoft IIS 10.0 Site Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
-
The IIS 10.0 website session state must be enabled.
When the session information is stored on the client, the session ID, along with the user authorization and identity information, is sent along with each client request and is either stored in a co...Rule Medium Severity -
A public IIS 10.0 website must only accept Secure Socket Layer (SSL) connections when authentication is required.
Transport Layer Security (TLS) encryption is a required security setting for a private web server. Encryption of private information is essential to ensuring data confidentiality. If private inform...Rule Medium Severity -
An IIS 10.0 website behind a load balancer or proxy server must produce log records containing the source client IP, and destination information.
Web server logging capability is critical for accurate forensic analysis. Without sufficient and accurate information, a correct replay of the events cannot be determined. Ascertaining the correc...Rule Medium Severity -
The IIS 10.0 website must produce log records that contain sufficient information to establish the outcome (success or failure) of IIS 10.0 website events.
Web server logging capability is critical for accurate forensic analysis. Without sufficient and accurate information, a correct replay of the events cannot be determined. Ascertaining the success...Rule Medium Severity -
Mappings to unused and vulnerable scripts on the IIS 10.0 website must be removed.
IIS 10.0 will either allow or deny script execution based on file extension. The ability to control script execution is controlled through two features with IIS 10.0, Request Filtering and Handler ...Rule Medium Severity -
Each IIS 10.0 website must be assigned a default host header.
The web server must be configured to listen on a specified IP address and port. Without specifying an IP address and port for the web server to use, the web server will listen on all IP addresses a...Rule Medium Severity -
Anonymous IIS 10.0 website access accounts must be restricted.
Many of the security problems that occur are not the result of a user gaining access to files or data for which the user does not have permissions, but rather users are assigned incorrect permissio...Rule High Severity -
The IIS 10.0 website must generate unique session identifiers that cannot be reliably reproduced.
Communication between a client and the web server is done using the HTTP protocol, but HTTP is a stateless protocol. To maintain a connection or session, a web server will generate a session identi...Rule Medium Severity -
Double encoded URL requests must be prohibited by any IIS 10.0 website.
Request filtering enables administrators to create a more granular rule set with which to allow or reject inbound web content. Setting limits on web requests ensures availability of web services an...Rule Medium Severity -
The IIS 10.0 websites connectionTimeout setting must be explicitly configured to disconnect an idle session.
Leaving sessions open indefinitely is a major security risk. An attacker can easily use an already authenticated session to access the hosted application as the previously authenticated user. By cl...Rule Medium Severity -
The IIS 10.0 website must provide the capability to immediately disconnect or disable remote access to the hosted applications.
During an attack on the web server or any of the hosted applications, the system administrator may need to disconnect or disable access by users to stop the attack. The web server must provide a c...Rule Medium Severity -
The IIS 10.0 private website must employ cryptographic mechanisms (TLS) and require client certificates.
TLS encryption is a required security setting for a private web server. Encryption of private information is essential to ensuring data confidentiality. If private information is not encrypted, it ...Rule Medium Severity -
The application pools rapid fail protection for each IIS 10.0 website must be enabled.
Rapid fail protection is a feature that interrogates the health of worker processes associated with websites and web applications. It can be configured to perform a number of actions such as shutti...Rule Medium Severity -
The application pools rapid fail protection settings for each IIS 10.0 website must be managed.
Windows Process Activation Service (WAS) manages application pool configuration and may flag a worker process as unhealthy and shut it down. The rapid fail protection must be set to a suitable valu...Rule Medium Severity -
Interactive scripts on the IIS 10.0 web server must have restrictive access controls.
CGI is a programming standard for interfacing external applications with information servers, such as HTTP or web servers. CGI, represented by all upper case letters, should not be confused with th...Rule Medium Severity -
Non-ASCII characters in URLs must be prohibited by any IIS 10.0 website.
Setting limits on web requests ensures availability of web services and mitigates the risk of buffer overflow type attacks. The allow high-bit characters Request Filter enables rejection of request...Rule Medium Severity -
SRG-APP-000246-WSR-000149
Group -
SRG-APP-000001-WSR-000002
Group -
SRG-APP-000098-WSR-000060
Group -
SRG-APP-000001-WSR-000002
Group -
The IIS 10.0 website session state cookie settings must be configured to Use Cookies mode.
When the session information is stored on the client, the session ID, along with the user authorization and identity information, is sent along with each client request and is stored in either a co...Rule Medium Severity -
SRG-APP-000014-WSR-000006
Group -
A private IIS 10.0 website must only accept Secure Socket Layer (SSL) connections.
Transport Layer Security (TLS) encryption is a required security setting for a private web server. Encryption of private information is essential to ensuring data confidentiality. If private inform...Rule Medium Severity -
SRG-APP-000014-WSR-000006
Group -
SRG-APP-000092-WSR-000055
Group -
Both the log file and Event Tracing for Windows (ETW) for each IIS 10.0 website must be enabled.
Internet Information Services (IIS) on Windows Server 2012 provides basic logging capabilities. However, because IIS takes some time to flush logs to disk, administrators do not have access to logg...Rule Medium Severity -
SRG-APP-000099-WSR-000061
Group -
SRG-APP-000100-WSR-000064
Group -
The IIS 10.0 website must produce log records containing sufficient information to establish the identity of any user/subject or process associated with an event.
Web server logging capability is critical for accurate forensic analysis. Without sufficient and accurate information, a correct replay of the events cannot be determined. Determining user account...Rule Medium Severity -
SRG-APP-000141-WSR-000081
Group -
The IIS 10.0 website must have Multipurpose Internet Mail Extensions (MIME) that invoke OS shell programs disabled.
Controlling what a user of a hosted application can access is part of the security posture of the web server. Any time a user can access more functionality than is needed for the operation of the h...Rule Medium Severity -
SRG-APP-000141-WSR-000082
Group -
SRG-APP-000141-WSR-000083
Group -
The IIS 10.0 website must have resource mappings set to disable the serving of certain file types.
IIS 10.0 will either allow or deny script execution based on file extension. The ability to control script execution is controlled through two features with IIS 10.0, Request Filtering and Handler ...Rule Medium Severity -
SRG-APP-000141-WSR-000085
Group -
The IIS 10.0 website must have Web Distributed Authoring and Versioning (WebDAV) disabled.
A web server can be installed with functionality that by its nature is not secure. Web Distributed Authoring (WebDAV) is an extension to the HTTP protocol that, when developed, was meant to allow u...Rule Medium Severity -
SRG-APP-000142-WSR-000089
Group -
SRG-APP-000172-WSR-000104
Group -
A private IIS 10.0 website authentication mechanism must use client certificates to transmit session identifier to assure integrity.
A DoD private website must use PKI as an authentication mechanism for web users. Information systems residing behind web servers requiring authorization based on individual identity must use the id...Rule Medium Severity -
SRG-APP-000211-WSR-000031
Group -
SRG-APP-000224-WSR-000136
Group -
SRG-APP-000233-WSR-000146
Group -
The IIS 10.0 website document directory must be in a separate partition from the IIS 10.0 websites system files.
The content database is accessed by multiple anonymous users when the web server is in production. By locating the content database on the same partition as the web server system file, the risk for...Rule Medium Severity -
SRG-APP-000246-WSR-000149
Group -
The IIS 10.0 website must be configured to limit the maxURL.
Request filtering replaces URLScan in IIS, enabling administrators to create a more granular rule set with which to allow or reject inbound web content. By setting limits on web requests, it helps ...Rule Medium Severity -
SRG-APP-000246-WSR-000149
Group -
The IIS 10.0 website must be configured to limit the size of web requests.
By setting limits on web requests, it ensures availability of web services and mitigates the risk of buffer overflow type attacks. The maxAllowedContentLength Request Filter limits the number of by...Rule Medium Severity -
SRG-APP-000246-WSR-000149
Group -
The IIS 10.0 websites Maximum Query String limit must be configured.
Setting limits on web requests helps to ensure availability of web services and may also help mitigate the risk of buffer overflow type attacks. The Maximum Query String Request Filter describes th...Rule Medium Severity -
SRG-APP-000246-WSR-000149
Group
Node 2
The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.