COMMON ATTACK PATTERN ENUMERATION AND CLASSIFICATIONMITRE canlı kaydı

CAPEC-137

Parameter Injection

An adversary manipulates the content of request parameters for the purpose of undermining the security of the target. Some parameter encodings use text characters as separators. For example, parameters in a HTTP GET message are encoded as name-value pairs separated by an ampersand (&). If an attacker can supply text strings that are used to fill in these parameters, then they can inject special characters used in the encoding scheme to add or modify parameters. For example, if user input is fed directly into an HTTP GET request and the user provides the value "myInput&new_param=myValue", then the input parameter is set to myInput, but a new parameter (new_param) is also added with a value of myValue. This can significantly change the meaning of the query that is processed by the server. Any encoding scheme where parameters are identified and separated by text characters is potentially vulnerable to this attack - the HTTP GET encoding used above is just one example.

Soyutlama

Meta

Tipik ciddiyet

Medium

Saldırı ihtimali

Medium

Saldırıyı anla

Bu saldırı kalıbı nedir?

An adversary manipulates the content of request parameters for the purpose of undermining the security of the target. Some parameter encodings use text characters as separators. For example, parameters in a HTTP GET message are encoded as name-value pairs separated by an ampersand (&). If an attacker can supply text strings that are used to fill in these parameters, then they can inject special characters used in the encoding scheme to add or modify parameters. For example, if user input is fed directly into an HTTP GET request and the user provides the value "myInput&new_param=myValue", then the input parameter is set to myInput, but a new parameter (new_param) is also added with a value of myValue. This can significantly change the meaning of the query that is processed by the server. Any encoding scheme where parameters are identified and separated by text characters is potentially vulnerable to this attack - the HTTP GET encoding used above is just one example.

Gereksinimler

Saldırının gerçekleşmesi için ne gerekir?

Ön koşullar

  • The target application must use a parameter encoding where separators and parameter identifiers are expressed in regular text.
  • The target application must accept a string as user input, fail to sanitize characters that have a special meaning in the parameter encoding, and insert the user-supplied string in an encoding which is then processed.

Gerekli beceri

MITRE kaydında belirtilmemiş.

Gerekli kaynak

  • None: No specialized resources are required to execute this type of attack. The only requirement is the ability to provide string input to the target.

Etki

Başarılı saldırı neye yol açar?

Modify Data

Etkilenen alanlar: Integrity

Savunma

Nasıl önlenir ve etkisi azaltılır?

1
Implement an audit log written to a separate host. In the event of a compromise, the audit log may be able to provide evidence and details of the compromise.
2
Treat all user input as untrusted data that must be validated before use.
CAPEC-137: Parameter Injection — DayBreach Saldırı Sözlüğü · DayBreach