CAPEC Definitions

    CAPEC Definitions / CAPEC-85

    CAPEC-85: AJAX Footprinting

    This attack utilizes the frequent client-server roundtrips in Ajax conversation to scan a system. While Ajax does not open up new vulnerabilities per se, it does optimize them from an attacker point of view. A common first step for an attacker is to footprint the target environment to understand what attacks will work. Since footprinting relies on enumeration, the conversational pattern of rapid, multiple requests and responses that are typical in Ajax applications enable an attacker to look for many vulnerabilities, well-known ports, network locations and so on. The knowledge gained through Ajax fingerprinting can be used to support other attacks, such as XSS.

    Severity:Low
    Possibility:High

    Extended Description

    No Extended Description.

    Mitigations

    Design: Use browser technologies that do not allow client side scripting.

    Implementation: Perform input validation for all remote content.

    Relationships with other CAPECs

    CAPEC-580: System Footprinting

    CAPEC-63: Cross-Site Scripting (XSS)

    Prerequisites

    The user must allow JavaScript to execute in their browser

    Related Weaknesses

    CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

    CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

    CWE-348: Use of Less Trusted Source

    CWE-96: Improper Neutralization of Directives in Statically Saved Code ('Static Code Injection')

    CWE-20: Improper Input Validation

    CWE-116: Improper Encoding or Escaping of Output

    CWE-184: Incomplete List of Disallowed Inputs

    CWE-86: Improper Neutralization of Invalid Characters in Identifiers in Web Pages

    CWE-692: Incomplete Denylist to Cross-Site Scripting