Nombre: Sensitive Cookie with Improper SameSite Attribute

The SameSite attribute for sensitive cookies is not set, or an insecure value is used.

Informaciones generales

Detalles de contexto

Modos de introducción

Implementation : This weakness occurs during implementation when the coder does not properly set the SameSite attribute.

Plataformas aplicables

Lenguaje

Clase: Not Language-Specific (Undetermined)

Sistemas operativos

Clase: Not OS-Specific (Undetermined)

Arquitecturas

Clase: Not Architecture-Specific (Undetermined)

Tecnologías

Clase: Web Based (Undetermined)
Nombre: Web Server (Undetermined)

Consecuencias comunes

Alcance	Impacto	Probabilidad
Confidentiality Integrity Non-Repudiation Access Control	Modify Application Data

Ejemplos observados

Referencias	Descripción
CVE-2022-24045	Web application for a room automation system has client-side JavaScript that sets a sensitive cookie without the SameSite security attribute, allowing the cookie to be sniffed

Mitigaciones potenciales

Phases : Implementation
Set the SameSite attribute of a sensitive cookie to "Lax" or "Strict". This instructs the browser to apply this cookie only to same-domain requests, which provides a good Defense in Depth against CSRF attacks. When the "Lax" value is in use, cookies are also sent for top-level cross-domain navigation via HTTP GET, HEAD, OPTIONS, and TRACE methods, but not for other HTTP methods that are more likely to cause side-effects of state mutation.

Métodos de detección

Automated Static Analysis

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.)
Efectividad : High

Notas de mapeo de vulnerabilidades

Justificación : This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Comentario : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Patrones de ataque relacionados

CAPEC ID	Nombre del patrón de ataque
CAPEC-62	Cross Site Request Forgery An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.

Referencias

REF-1104

SameSite attribute specification draft
M. West, M. Goodwin.
https://datatracker.ietf.org/doc/html/draft-west-first-party-cookies-07

REF-1105

SameSite attribute description on MDN Web Docs
Mozilla.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie#samesitesamesite-value

REF-1106

Chromium support for SameSite attribute
The Chromium Projects.
https://www.chromium.org/updates/same-site/

Envío

Nombre	Organización	Fecha	Fecha de lanzamiento	Version
Michael Stepankin	Veracode	2020-06-19 +00:00	2020-02-24 +00:00	4.1

Modificaciones

Nombre	Organización	Fecha	Comentario
CWE Content Team	MITRE	2020-08-20 +00:00	updated Demonstrative_Examples, Related_Attack_Patterns
CWE Content Team	MITRE	2021-10-28 +00:00	updated Relationships
CWE Content Team	MITRE	2022-10-13 +00:00	updated Demonstrative_Examples
CWE Content Team	MITRE	2023-01-31 +00:00	updated Relationships
CWE Content Team	MITRE	2023-04-27 +00:00	updated Detection_Factors, References, Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2023-10-26 +00:00	updated Demonstrative_Examples, Observed_Examples
CWE Content Team	MITRE	2025-09-09 +00:00	updated References
CWE Content Team	MITRE	2025-12-11 +00:00	updated Applicable_Platforms, Relationships, Weakness_Ordinalities
CWE Content Team	MITRE	2026-10-28 +00:00	updated Background_Details, Common_Consequences, Description, Potential_Mitigations

Detalle CWE-1275

CWE-1275