Détail du CWE-1004

CWE-1004

Sensitive Cookie Without 'HttpOnly' Flag
Moyen
Incomplete
2017-01-19
00h00 +00:00
2023-10-26
00h00 +00:00
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Restez informé de toutes modifications pour un CWE spécifique.
Gestion des notifications

Nom: Sensitive Cookie Without 'HttpOnly' Flag

The product uses a cookie to store sensitive information, but the cookie is not marked with the HttpOnly flag.

Description du CWE

The HttpOnly flag directs compatible browsers to prevent client-side script from accessing cookies. Including the HttpOnly flag in the Set-Cookie HTTP response header helps mitigate the risk associated with Cross-Site Scripting (XSS) where an attacker's script code might attempt to read the contents of a cookie and exfiltrate information obtained. When set, browsers that support the flag will not reveal the contents of the cookie to a third party via client-side script executed via XSS.

Informations générales

Informations de base

An HTTP cookie is a small piece of data attributed to a specific website and stored on the user's computer by the user's web browser. This data can be leveraged for a variety of purposes including saving information entered into form fields, recording user activity, and for authentication purposes. Cookies used to save or record information generated by the user are accessed and modified by script code embedded in a web page. While cookies used for authentication are created by the website's server and sent to the user to be attached to future requests. These authentication cookies are often not meant to be accessed by the web page sent to the user, and are instead just supposed to be attached to future requests to verify authentication details.

Modes d'introduction

Implementation

Plateformes applicables

Langue

Class: Not Language-Specific (Undetermined)

Technologies

Class: Web Based (Undetermined)

Conséquences courantes

Portée Impact Probabilité
ConfidentialityRead Application Data

Note: If the HttpOnly flag is not set, then sensitive information stored in the cookie may be exposed to unintended parties.
IntegrityGain Privileges or Assume Identity

Note: If the cookie in question is an authentication cookie, then not setting the HttpOnly flag may allow an adversary to steal authentication data (e.g., a session ID) and assume the identity of the user.

Exemples observés

Références Description

CVE-2022-24045

Web application for a room automation system has client-side Javascript that sets a sensitive cookie without the HTTPOnly security attribute, allowing the cookie to be accessed.

CVE-2014-3852

CMS written in Python does not include the HTTPOnly flag in a Set-Cookie header, allowing remote attackers to obtain potentially sensitive information via script access to this cookie.

CVE-2015-4138

Appliance for managing encrypted communications does not use HttpOnly flag.

Mesures d’atténuation potentielles

Phases : Implementation
Leverage the HttpOnly flag when setting a sensitive cookie in a response.

Méthodes de détection

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.)
Efficacité : High

Notes de cartographie des vulnérabilités

Justification : 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.
Commentaire : 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.

Références

REF-2

HttpOnly
OWASP.
https://owasp.org/www-community/HttpOnly

REF-3

Some Bad News and Some Good News
Michael Howard.
https://learn.microsoft.com/en-us/previous-versions/ms972826(v=msdn.10)?redirectedfrom=MSDN

REF-4

C is for cookie, H is for hacker - understanding HTTP only and Secure cookies
Troy Hunt.
https://www.troyhunt.com/c-is-for-cookie-h-is-for-hacker/

REF-5

Mitigating Cross-site Scripting With HTTP-only Cookies
Microsoft.
https://learn.microsoft.com/en-us/previous-versions//ms533046(v=vs.85)?redirectedfrom=MSDN

Soumission

Nom Organisation Date Date de publication Version
CWE Content Team MITRE 2017-01-02 +00:00 2017-01-19 +00:00 2.10

Modifications

Nom Organisation Date Commentaire
CWE Content Team MITRE 2017-11-08 +00:00 updated Applicable_Platforms, References, Relationships
CWE Content Team MITRE 2020-02-24 +00:00 updated Applicable_Platforms, Relationships
CWE Content Team MITRE 2021-10-28 +00:00 updated Relationships
CWE Content Team MITRE 2023-01-31 +00:00 updated Description
CWE Content Team MITRE 2023-04-27 +00:00 updated Detection_Factors, References, Relationships, Time_of_Introduction
CWE Content Team MITRE 2023-06-29 +00:00 updated Mapping_Notes
CWE Content Team MITRE 2023-10-26 +00:00 updated Observed_Examples