名前: Sensitive Cookie Without 'HttpOnly' Flag

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

一般情報

背景の詳細

導入モード

Implementation

適用可能なプラットフォーム

言語

クラス： Not Language-Specific (Undetermined)

テクノロジー

クラス： Web Based (Undetermined)
名前： Web Server (Undetermined)

一般的な結果

スコープ	影響	可能性
Confidentiality	Read Application Data 注記：If the HttpOnly flag is not set, then sensitive information stored in the cookie may be exposed to unintended parties.
Integrity	Gain Privileges or Assume Identity 注記：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.

観察された例

参考文献	説明
CVE-2024-47833	python library for ML and data science does not use the Secure flag (CWE-614) or HTTPOnly security attribute (CWE-1004) for session cookies.
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.

潜在的な緩和策

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

検出方法

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.)
有効性 : High

脆弱性マッピングノート

理由 : 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.
コメント : 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.

参考文献

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

REF-1490

Securing Cookies: Why You Should Always Set HttpOnly
Ajay Monga.
https://medium.com/@ajay.monga73/securing-cookies-why-you-should-always-set-httponly-92489cbf76c1

登録情報

名前	組織	日付	リリース日	Version
CWE Content Team	MITRE	2017-01-02 +00:00	2017-01-19 +00:00	2.10

変更履歴

名前	組織	日付	コメント
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
CWE Content Team	MITRE	2025-12-11 +00:00	updated Applicable_Platforms, Observed_Examples, References, Relationships, Weakness_Ordinalities
CWE Content Team	MITRE	2026-04-30 +00:00	updated Background_Details, Description, Diagram
CWE Content Team	MITRE	2026-10-28 +00:00	updated Observed_Examples

CWE-1004 詳細

CWE-1004