Tên: Not Failing Securely

When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.

Thông tin chung

Các cách xuất hiện

Architecture and Design : This weakness typically occurs as a result of wanting to "fail functional" to minimize administration and support costs, instead of "failing safe."
Implementation

Nền tảng áp dụng

Ngôn ngữ

Lớp: Not Language-Specific (Undetermined)

Công nghệ

Lớp: Not Technology-Specific (Undetermined)
Lớp: ICS/OT (Undetermined)

Hậu quả phổ biến

Phạm vi	Tác động	Khả năng xảy ra
Other	Varies by Context Ghi chú: By entering a less secure state, the product inherits the weaknesses associated with that state, making it easier to compromise. At the least, it causes administrators to have a false sense of security.
Access Control	Bypass Protection Mechanism Ghi chú: Intended access restrictions can be bypassed, which is often contradictory to what the product's administrator expects.

Ví dụ đã quan sát

Tài liệu tham khảo	Mô tả
CVE-2007-5277	The failure of connection attempts in a web browser resets DNS pin restrictions. An attacker can then bypass the same origin policy by rebinding a domain name to a different IP address. This was an attempt to "fail functional."
CVE-2006-4407	Incorrect prioritization leads to the selection of a weaker cipher. Although it is not known whether this issue occurred in implementation or design, it is feasible that a poorly designed algorithm could be a factor.

Các biện pháp giảm thiểu tiềm năng

Phases : Architecture and Design
Subdivide and allocate resources and components so that a failure in one part does not affect the entire product.

Ghi chú ánh xạ lỗ hổng

Lý do : This CWE entry is a Class and might have Base-level children that would be more appropriate
Bình luận : Examine children of this entry to see if there is a better fit

Ghi chú

Since design issues are hard to fix, they are rarely publicly reported, so there are few CVE examples of this problem as of January 2008. Most publicly reported issues occur as the result of an implementation error instead of design, such as CVE-2005-3177 (Improper handling of large numbers of resources) or CVE-2005-2969 (inadvertently disabling a verification step, leading to selection of a weaker protocol).

Tài liệu tham khảo

REF-196

The Protection of Information in Computer Systems
Jerome H. Saltzer, Michael D. Schroeder.
http://web.mit.edu/Saltzer/www/publications/protection/

REF-522

Failing Securely
Sean Barnum, Michael Gegick.
https://web.archive.org/web/20221017053210/https://www.cisa.gov/uscert/bsi/articles/knowledge/principles/failing-securely

Gửi

Tên	Tổ chức	Ngày	Ngày phát hành	Version
Pascal Meunier	Purdue University	2008-01-18 +00:00	2008-01-30 +00:00	Draft 8

Sửa đổi

Tên	Tổ chức	Ngày	Bình luận
Eric Dalci	Cigital	2008-07-01 +00:00	updated Time_of_Introduction
CWE Content Team	MITRE	2008-09-08 +00:00	updated Common_Consequences, Description, Name, Relationships, Taxonomy_Mappings, Weakness_Ordinalities
CWE Content Team	MITRE	2009-01-12 +00:00	updated Description, Name
CWE Content Team	MITRE	2009-03-10 +00:00	updated Relationships
CWE Content Team	MITRE	2009-05-27 +00:00	updated Name
CWE Content Team	MITRE	2010-12-13 +00:00	updated Research_Gaps
CWE Content Team	MITRE	2011-06-01 +00:00	updated Common_Consequences
CWE Content Team	MITRE	2012-05-11 +00:00	updated Relationships
CWE Content Team	MITRE	2012-10-30 +00:00	updated Potential_Mitigations
CWE Content Team	MITRE	2014-07-30 +00:00	updated Relationships
CWE Content Team	MITRE	2017-11-08 +00:00	updated Applicable_Platforms, Causal_Nature, Relationships
CWE Content Team	MITRE	2020-02-24 +00:00	updated Relationships
CWE Content Team	MITRE	2022-04-28 +00:00	updated Relationships
CWE Content Team	MITRE	2022-10-13 +00:00	updated References
CWE Content Team	MITRE	2023-01-31 +00:00	updated Applicable_Platforms
CWE Content Team	MITRE	2023-04-27 +00:00	updated 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
CWE Content Team	MITRE	2025-12-11 +00:00	updated Relationships
CWE Content Team	MITRE	2026-10-28 +00:00	updated Common_Consequences, Description, Modes_of_Introduction, Name

Chi tiết CWE-636

CWE-636