Web Server Security Requirements Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-APP-000435
<GroupDescription></GroupDescription>Group -
The web server must be protected from being stopped by a non-privileged user.
<VulnDiscussion>An attacker has at least two reasons to stop a web server. The first is to cause a DoS, and the second is to put in place cha...Rule Medium Severity -
SRG-APP-000435
<GroupDescription></GroupDescription>Group -
The web server must be tuned to handle the operational requirements of the hosted application.
<VulnDiscussion>A Denial of Service (DoS) can occur when the web server is so overwhelmed that it can no longer respond to additional request...Rule Medium Severity -
SRG-APP-000439
<GroupDescription></GroupDescription>Group -
The web server must employ cryptographic mechanisms (TLS/DTLS/SSL) preventing the unauthorized disclosure of information during transmission.
<VulnDiscussion>Preventing the disclosure of transmitted information requires that the web server take measures to employ some form of crypto...Rule High Severity -
SRG-APP-000439
<GroupDescription></GroupDescription>Group -
Web server session IDs must be sent to the client using SSL/TLS.
<VulnDiscussion>The HTTP protocol is a stateless protocol. To maintain a session, a session identifier is used. The session identifier is a p...Rule Medium Severity -
SRG-APP-000439
<GroupDescription></GroupDescription>Group -
Web server cookies, such as session cookies, sent to the client using SSL/TLS must not be compressed.
<VulnDiscussion>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 -
SRG-APP-000439
<GroupDescription></GroupDescription>Group -
Cookies exchanged between the web server and the client, such as session cookies, must have cookie properties set to prohibit client-side scripts from reading the cookie data.
<VulnDiscussion>A cookie can be read by client-side scripts easily if cookie properties are not set properly. By allowing cookies to be read ...Rule Medium Severity -
SRG-APP-000439
<GroupDescription></GroupDescription>Group -
The web server must disable accounts when the accounts are no longer associated to a user.
<VulnDiscussion>Disabling expired, inactive, or otherwise anomalous accounts supports the concepts of least privilege and least functionality...Rule Medium Severity -
SRG-APP-000745
<GroupDescription></GroupDescription>Group -
Cookies exchanged between the web server and the client, such as session cookies, must have cookie properties set to force the encryption of cookies.
<VulnDiscussion>Cookies can be sent to a client using TLS/SSL to encrypt the cookies, but TLS/SSL is not used by every hosted application sin...Rule Medium Severity -
SRG-APP-000439
<GroupDescription></GroupDescription>Group -
A web server must maintain the confidentiality of controlled information during transmission through the use of an approved TLS version.
<VulnDiscussion>Transport Layer Security (TLS) is a required transmission protocol for a web server hosting controlled information. The use o...Rule Medium Severity -
SRG-APP-000439
<GroupDescription></GroupDescription>Group -
The web server must remove all export ciphers to protect the confidentiality and integrity of transmitted information.
<VulnDiscussion>During the initial setup of a Transport Layer Security (TLS) connection to the web server, the client sends a list of support...Rule Medium Severity
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