COMMON WEAKNESS ENUMERATIONDraft

CWE-300

Channel Accessible by Non-Endpoint

The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint.

Soyutlama

Class

Yapı

Simple

Sömürü İhtimali

Medium

Problemi anla

Problem nedir?

The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint.

Genişletilmiş açıklama

In order to establish secure communication between two parties, it is often important to adequately verify the identity of entities at each end of the communication channel. Inadequate or inconsistent verification may result in insufficient or incorrect identification of either communicating entity. This can have negative consequences such as misplaced trust in the entity at the other end of the channel. An attacker can leverage this by interposing between the communicating entities and masquerading as the original entity. In the absence of sufficient verification of identity, such an attacker can eavesdrop and potentially modify the communication between the original entities.

Terminoloji

Alternatif adlar ve kullanım biçimleri

Adversary-in-the-Middle / AITM

Attacker-in-the-Middle / AITM

Man-in-the-Middle / MITM

Person-in-the-Middle / PITM

Monkey-in-the-Middle

Monster-in-the-Middle

Manipulator-in-the-Middle

On-path attack

Interception attack

Kök neden

Problem nasıl ve ne zaman oluşur?

Yaşam döngüsü evresi

Architecture and Design

REALIZATION: This weakness is caused during implementation of an architectural security tactic.

Risk

Başarılı sömürü neye yol açar?

Read Application DataModify Application DataGain Privileges or Assume Identity

Etkilenen güvenlik alanları: Confidentiality, Integrity, Access Control

An attacker could pose as one of the entities and read or possibly modify the communication.

Savunma

Nasıl önlenir ve çözülür?

Implementation

Uygulama aşaması savunması

Detay
Always fully authenticate both ends of any communications channel.

Architecture and Design

Mimari ve tasarım yaklaşımı

Detay
Adhere to the principle of complete mediation.

Implementation

Uygulama aşaması savunması

Detay
A certificate binds an identity to a cryptographic key to authenticate a communicating party. Often, the certificate takes the encrypted form of the hash of the identity of the subject, the public key, and information such as time of issue or expiration using the issuer's private key. The certificate can be validated by deciphering the certificate with the issuer's public key. See also X.509 certificate signature chains and the PGP certification structure.

Doğrulama

Nasıl tespit edilir?

Automated Dynamic Analysis

Some tools can act as proxy servers that allow the tester to intercept packets or messages, inspect them, and modify them before sending them to the destination in order to see if the modified packets are still accepted by the receiving component.

Automated Dynamic Analysis

Dynamic Application Security Testing (DAST) tools can be used to detect network traffic without encryption and/or verification. The affected protocol may be subject to Adversary-in-the-Middle attacks. Some tools act as proxy servers that allow the tester to inspect and modify packets/messages to see if they are still accepted by the receiving component.

Automated Static Analysis

Moderate
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.) The analysis could identify use of protocols that are subject to Adversary-in-the-Middle attacks.

Encryption and other protection mechanisms may be provided in the environment (e.g., by a load balancer or firewall that is positioned in front of a server), but this cannot be detected by SAST tools.