COMMON ATTACK PATTERN ENUMERATION AND CLASSIFICATIONLive MITRE record

CAPEC-274

HTTP Verb Tampering

An attacker modifies the HTTP Verb (e.g. GET, PUT, TRACE, etc.) in order to bypass access restrictions. Some web environments allow administrators to restrict access based on the HTTP Verb used with requests. However, attackers can often provide a different HTTP Verb, or even provide a random string as a verb in order to bypass these protections. This allows the attacker to access data that should otherwise be protected.

Abstraction

Detailed

Typical severity

Medium

Likelihood of attack

Medium

Understand the attack

What is this attack pattern?

An attacker modifies the HTTP Verb (e.g. GET, PUT, TRACE, etc.) in order to bypass access restrictions. Some web environments allow administrators to restrict access based on the HTTP Verb used with requests. However, attackers can often provide a different HTTP Verb, or even provide a random string as a verb in order to bypass these protections. This allows the attacker to access data that should otherwise be protected.

Requirements

What does the attack require?

Prerequisites

  • The targeted system must attempt to filter access based on the HTTP verb used in requests.

Skills required

Not stated in the MITRE record.

Resources required

  • The attacker requires a tool that allows them to manually control the HTTP verb used to send messages to the targeted server.

Defence

How is it prevented and mitigated?

1
Design: Ensure that only legitimate HTTP verbs are allowed.
2
Design: Do not use HTTP verbs as factors in access decisions.
CAPEC-274: HTTP Verb Tampering — DayBreach Saldırı Sözlüğü · DayBreach