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Apache Server 2.4 Windows Server Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The Apache web server must separate the hosted applications from hosted Apache web server management functionality.

    <VulnDiscussion>The separation of user functionality from web server management can be accomplished by moving management functions to a separ...
    Rule Medium Severity
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  • SRG-APP-000220-WSR-000201

    <GroupDescription></GroupDescription>
    Group
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  • The Apache web server must invalidate session identifiers upon hosted application user logout or other session termination.

    &lt;VulnDiscussion&gt;Captured sessions can be reused in "replay" attacks. This requirement limits the ability of adversaries from capturing and co...
    Rule Medium Severity
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  • SRG-APP-000223-WSR-000011

    <GroupDescription></GroupDescription>
    Group
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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.

    &lt;VulnDiscussion&gt;Cookies are used to exchange data between the web server and the client. Cookies, such as a session cookie, may contain sessi...
    Rule Medium Severity
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  • SRG-APP-000223-WSR-000145

    <GroupDescription></GroupDescription>
    Group
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  • The Apache web server must accept only system-generated session identifiers.

    &lt;VulnDiscussion&gt;Communication between a client and the web server is done using the HTTP protocol, but HTTP is a stateless protocol. To maint...
    Rule Medium Severity
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  • SRG-APP-000224-WSR-000136

    <GroupDescription></GroupDescription>
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  • The Apache web server must generate unique session identifiers that cannot be reliably reproduced.

    &lt;VulnDiscussion&gt;Communication between a client and the Apache web server is done using the HTTP protocol, but HTTP is a stateless protocol. T...
    Rule Medium Severity
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  • SRG-APP-000224-WSR-000139

    <GroupDescription></GroupDescription>
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  • The Apache web server must generate unique session identifiers with definable entropy.

    &lt;VulnDiscussion&gt;Generating a session identifier (ID) that is not easily guessed through brute force is essential to deter several types of se...
    Rule Medium Severity
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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.

    &lt;VulnDiscussion&gt;Determining a safe state for failure and weighing that against a potential DoS for users depends on what type of application ...
    Rule Medium Severity
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  • SRG-APP-000233-WSR-000146

    <GroupDescription></GroupDescription>
    Group
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  • The Apache web server document directory must be in a separate partition from the Apache web servers system files.

    &lt;VulnDiscussion&gt;A web server is used to deliver content on the request of a client. The content delivered to a client must be controlled, all...
    Rule Medium Severity
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  • SRG-APP-000246-WSR-000149

    <GroupDescription></GroupDescription>
    Group
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  • The Apache web server must restrict the ability of users to launch denial-of-service (DoS) attacks against other information systems or networks.

    &lt;VulnDiscussion&gt;Apache web server can limit the ability of the web server being used in a DoS attack through several methods. The methods emp...
    Rule Medium Severity
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  • SRG-APP-000266-WSR-000159

    <GroupDescription></GroupDescription>
    Group
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  • Warning and error messages displayed to clients must be modified to minimize the identity of the Apache web server, patches, loaded modules, and directory paths.

    &lt;VulnDiscussion&gt;Information needed by an attacker to begin looking for possible vulnerabilities in a web server includes any information abou...
    Rule Medium Severity
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  • SRG-APP-000266-WSR-000160

    <GroupDescription></GroupDescription>
    Group
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  • Debugging and trace information used to diagnose the Apache web server must be disabled.

    &lt;VulnDiscussion&gt;Information needed by an attacker to begin looking for possible vulnerabilities in a web server includes any information abou...
    Rule Medium Severity
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  • SRG-APP-000295-WSR-000012

    <GroupDescription></GroupDescription>
    Group
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  • The Apache web server must set an inactive timeout for completing the TLS handshake

    &lt;VulnDiscussion&gt;Leaving sessions open indefinitely is a major security risk. An attacker can easily use an already authenticated session to a...
    Rule Medium Severity
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  • SRG-APP-000315-WSR-000004

    <GroupDescription></GroupDescription>
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  • The Apache web server must restrict inbound connections from nonsecure zones.

    &lt;VulnDiscussion&gt;Remote access to the Apache web server is any access that communicates through an external, non-organization-controlled netwo...
    Rule Medium Severity
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  • SRG-APP-000316-WSR-000170

    <GroupDescription></GroupDescription>
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  • The Apache web server must be configured to immediately disconnect or disable remote access to the hosted applications.

    &lt;VulnDiscussion&gt;During an attack on the Apache web server or any of the hosted applications, the system administrator may need to disconnect ...
    Rule Medium Severity
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  • SRG-APP-000340-WSR-000029

    <GroupDescription></GroupDescription>
    Group
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  • Non-privileged accounts on the hosting system must only access Apache web server security-relevant information and functions through a distinct administrative account.

    &lt;VulnDiscussion&gt;By separating Apache web server security functions from non-privileged users, roles can be developed that can then be used to...
    Rule Medium Severity
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  • SRG-APP-000356-WSR-000007

    <GroupDescription></GroupDescription>
    Group
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  • An Apache web server that is part of a web server cluster must route all remote management through a centrally managed access control point.

    &lt;VulnDiscussion&gt;A web server cluster is a group of independent Apache web servers that are managed as a single system for higher availability...
    Rule Medium Severity
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  • SRG-APP-000357-WSR-000150

    <GroupDescription></GroupDescription>
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  • The Apache web server must use a logging mechanism that is configured to allocate log record storage capacity large enough to accommodate the logging requirements of the Apache web server.

    &lt;VulnDiscussion&gt;To make certain that the logging mechanism used by the web server has sufficient storage capacity in which to write the logs,...
    Rule Medium Severity
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  • SRG-APP-000358-WSR-000063

    <GroupDescription></GroupDescription>
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  • The Apache web server must not impede the ability to write specified log record content to an audit log server.

    &lt;VulnDiscussion&gt;Writing events to a centralized management audit system offers many benefits to the enterprise over having dispersed logs. Ce...
    Rule Medium Severity
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  • SRG-APP-000358-WSR-000163

    <GroupDescription></GroupDescription>
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  • The Apache web server must be configurable to integrate with an organizations security infrastructure.

    &lt;VulnDiscussion&gt;A web server will typically use logging mechanisms for maintaining a historical log of activity that occurs within a hosted a...
    Rule Medium Severity
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  • SRG-APP-000359-WSR-000065

    <GroupDescription></GroupDescription>
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  • The Apache web server must use a logging mechanism that is configured to provide a warning to the Information System Security Officer (ISSO) and System Administrator (SA) when allocated record storage volume reaches 75 percent of maximum log record storage capacity.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process logs as required. Log p...
    Rule Medium Severity
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  • SRG-APP-000375-WSR-000171

    <GroupDescription></GroupDescription>
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  • The Apache web server must generate log records that can be mapped to Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT) with a minimum granularity of one second.

    &lt;VulnDiscussion&gt;If time stamps are not consistently applied and there is no common time reference, it is difficult to perform forensic analys...
    Rule Medium Severity
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  • SRG-APP-000427-WSR-000186

    <GroupDescription></GroupDescription>
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  • The Apache web server must only accept client certificates issued by DoD PKI or DoD-approved PKI Certification Authorities (CAs).

    &lt;VulnDiscussion&gt;Non-DoD-approved PKIs have not been evaluated to ensure they have security controls and identity vetting procedures in place ...
    Rule Medium Severity
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  • SRG-APP-000435-WSR-000147

    <GroupDescription></GroupDescription>
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  • The Apache web server must be protected from being stopped by a non-privileged user.

    &lt;VulnDiscussion&gt;An attacker has at least two reasons to stop a web server. The first is to cause a denial of service (DoS), and the second is...
    Rule Medium Severity
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  • SRG-APP-000435-WSR-000148

    <GroupDescription></GroupDescription>
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  • The Apache web server must be tuned to handle the operational requirements of the hosted application.

    &lt;VulnDiscussion&gt;A denial of service (DoS) can occur when the Apache web server is so overwhelmed that it can no longer respond to additional ...
    Rule Medium Severity
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  • SRG-APP-000439-WSR-000153

    <GroupDescription></GroupDescription>
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  • The Apache web server cookies, such as session cookies, sent to the client using SSL/TLS must not be compressed.

    &lt;VulnDiscussion&gt;A cookie is used when a web server needs to share data with the client's browser. The data is often used to remember the clie...
    Rule Medium Severity
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  • SRG-APP-000456-WSR-000187

    <GroupDescription></GroupDescription>
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  • The Apache web server must install security-relevant software updates within the configured time period directed by an authoritative source (e.g., IAVM, CTOs, DTMs, and STIGs).

    &lt;VulnDiscussion&gt;Security flaws with software applications are discovered daily. Vendors are constantly updating and patching their products t...
    Rule Medium Severity
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