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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-APP-000439

    Group
  • The web server must disable HTTP/1.x downgrading.

    HTTP/2 is backward compatible with HTTP/1.x, so it is possible to configure the architecture to implement a front-end server for HTTP/2 while communicating with one or more back-end servers that su...
    Rule Medium Severity
  • SRG-APP-000251

    Group
  • The web server must interpret and normalize ambiguous HTTP requests or terminate the TCP connection.

    Request smuggling attacks involve placing both the Content-Length header and the Transfer-Encoding header into a single HTTP/1 request and manipulating it so that web servers (i.e., back-end, front...
    Rule Medium Severity
  • SRG-APP-000251

    Group
  • The web server must terminate the connection if server-level exceptions are triggered when handling requests to prevent HTTP request smuggling attacks.

    The web server defines a set of exceptions for every HTTP status code. Each exception class has a status code according to RFC 2068: Codes with 100-300 are not really errors; 400s are client errors...
    Rule Medium Severity
  • SRG-APP-000439

    Group
  • The web server must only use forward proxies that route HTTP/2 requests upstream.

    Without protection of the transmitted information, confidentiality and integrity may be compromised since unprotected communications can be intercepted and read or altered. Communication paths outs...
    Rule Medium Severity

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