Apache Server 2.4 Windows Server Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-APP-000001-WSR-000001
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The Apache web server must limit the number of allowed simultaneous session requests.
Apache web server management includes the ability to control the number of users and user sessions that utilize an Apache web server. Limiting the number of allowed users and sessions per user is h...Rule Medium Severity -
SRG-APP-000001-WSR-000002
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SRG-APP-000014-WSR-000006
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The Apache web server must use encryption strength in accordance with the categorization of data hosted by the Apache web server when remote connections are provided.
The Apache web server has several remote communications channels. Examples are user requests via http/https, communication to a backend database, and communication to authenticate users. The encryp...Rule Medium Severity -
SRG-APP-000516-WSR-000174
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System logging must be enabled.
The server error logs are invaluable because they can also be used to identify potential problems and enable proactive remediation. Log data can reveal anomalous behavior such as "not found" or "un...Rule Medium Severity -
SRG-APP-000089-WSR-000047
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The Apache web server must generate, at a minimum, log records for system startup and shutdown, system access, and system authentication events.
Log records can be generated from various components within the Apache web server (e.g., httpd, plug-ins to external backends, etc.). From a web server perspective, certain specific Apache web serv...Rule Medium Severity -
SRG-APP-000095-WSR-000056
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SRG-APP-000098-WSR-000060
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An Apache web server, behind a load balancer or proxy server, must produce log records containing the client IP information as the source and destination and not the load balancer or proxy IP information with each event.
Apache 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 ...Rule Medium Severity -
SRG-APP-000108-WSR-000166
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The Apache web server must use a logging mechanism that is configured to alert the (ISSO) and System Administrator (SA) in the event of a processing failure.
Reviewing log data allows an investigator to recreate the path of an attacker and to capture forensic data for later use. Log data is also essential to system administrators in their daily administ...Rule Medium Severity -
SRG-APP-000118-WSR-000068
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SRG-APP-000120-WSR-000070
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SRG-APP-000125-WSR-000071
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The log data and records from the Apache web server must be backed up onto a different system or media.
Protection of log data includes ensuring log data is not accidentally lost or deleted. Backing up log records to an unrelated system or onto separate media than the system the web server is actuall...Rule Medium Severity -
SRG-APP-000141-WSR-000015
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SRG-APP-000141-WSR-000075
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The Apache web server must only contain services and functions necessary for operation.
A web server can provide many features, services, and processes. Some of these may be deemed unnecessary or too unsecure to run on a production DoD system. The web server must provide the capabili...Rule Medium Severity -
SRG-APP-000141-WSR-000076
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The Apache web server must not be a proxy server.
A web server should be primarily a web server or a proxy server but not both, for the same reasons that other multiuse servers are not recommended. Scanning for web servers that will also proxy req...Rule Medium Severity -
SRG-APP-000141-WSR-000077
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SRG-APP-000141-WSR-000078
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Apache web server application directories, libraries, and configuration files must only be accessible to privileged users.
When accounts used for web server features such as documentation, sample code, example applications, tutorials, utilities, and services are created even though the feature is not installed, they be...Rule High Severity -
SRG-APP-000141-WSR-000081
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The Apache web server must have resource mappings set to disable the serving of certain file types.
Resource mapping is the process of tying a particular file type to a process in the web server that can serve that type of file to a requesting client and to identify which file types are not to be...Rule Medium Severity -
SRG-APP-000141-WSR-000082
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The Apache web server must allow the mappings to unused and vulnerable scripts to be removed.
Scripts allow server-side processing on behalf of the hosted application user or as processes needed in the implementation of hosted applications. Removing scripts not needed for application operat...Rule Medium Severity -
SRG-APP-000141-WSR-000085
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The Apache web server must have Web Distributed Authoring (WebDAV) disabled.
A web server can be installed with functionality that, just by its nature, is not secure. WebDAV is an extension to the HTTP protocol that, when developed, was meant to allow users to create, chang...Rule Medium Severity -
SRG-APP-000142-WSR-000089
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SRG-APP-000172-WSR-000104
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SRG-APP-000175-WSR-000095
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The Apache web server must perform RFC 5280-compliant certification path validation.
A certificate's certification path is the path from the end entity certificate to a trusted root certification authority (CA). Certification path validation is necessary for a relying party to make...Rule Medium Severity -
SRG-APP-000211-WSR-000030
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SRG-APP-000211-WSR-000129
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The Apache web server must separate the hosted applications from hosted Apache web server management functionality.
The separation of user functionality from web server management can be accomplished by moving management functions to a separate IP address or port. To further separate the management functions, se...Rule Medium Severity -
SRG-APP-000220-WSR-000201
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SRG-APP-000223-WSR-000011
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Cookies exchanged between the Apache web server and client, such as session cookies, must have security settings that disallow cookie access outside the originating Apache web server and hosted application.
Cookies are used to exchange data between the web server and the client. Cookies, such as a session cookie, may contain session information and user credentials used to maintain a persistent connec...Rule Medium Severity -
SRG-APP-000223-WSR-000145
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SRG-APP-000224-WSR-000136
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The Apache web server must generate unique session identifiers that cannot be reliably reproduced.
Communication between a client and the Apache 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...Rule Medium Severity -
SRG-APP-000224-WSR-000139
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SRG-APP-000225-WSR-000140
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The Apache web server must be built to fail to a known safe state if system initialization fails, shutdown fails, or aborts fail.
Determining a safe state for failure and weighing that against a potential DoS for users depends on what type of application the web server is hosting. For an application presenting publicly availa...Rule Medium Severity -
SRG-APP-000233-WSR-000146
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SRG-APP-000246-WSR-000149
Group
Node 2
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