CWE-638
Not Using Complete Mediation
2008-01-30
00h00 +00:00
00h00 +00:00
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Tên: Not Using Complete Mediation
The product does not perform access checks on a resource every time the resource is accessed by an entity, which can create resultant weaknesses if that entity's rights or privileges change over time.
Thông tin chung
Các cách xuất hiện
ImplementationOperation
Nền tảng áp dụng
Ngôn ngữ
Lớp: Not Language-Specific (Undetermined)Hậu quả phổ biến
| Phạm vi | Tác động | Khả năng xảy ra |
|---|---|---|
| Integrity Confidentiality Availability Access Control Other | Gain Privileges or Assume Identity, Execute Unauthorized Code or Commands, Bypass Protection Mechanism, Read Application Data, Other Ghi chú: A user might retain access to a critical resource even after privileges have been revoked, possibly allowing access to privileged functionality or sensitive information, depending on the role of the resource. |
Ví dụ đã quan sát
| Tài liệu tham khảo | Mô tả |
|---|---|
CVE-2007-0408 | Server does not properly validate client certificates when reusing cached connections. |
Các biện pháp giảm thiểu tiềm năng
Phases : Architecture and DesignInvalidate cached privileges, file handles or descriptors, or other access credentials whenever identities, processes, policies, roles, capabilities or permissions change. Perform complete authentication checks before accepting, caching and reusing data, dynamic content and code (scripts). Avoid caching access control decisions as much as possible.
Phases : Architecture and Design
Identify all possible code paths that might access sensitive resources. If possible, create and use a single interface that performs the access checks, and develop code standards that require use of this interface.
Ghi chú ánh xạ lỗ hổng
Lý do : This CWE entry is a Class and might have Base-level children that would be more appropriateBình luận : Examine children of this entry to see if there is a better fit
Mẫu tấn công liên quan
| ID CAPEC | Tên mẫu tấn công |
|---|---|
| CAPEC-104 | Cross Zone Scripting
An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. |
Tài liệu tham khảo
REF-196
The Protection of Information in Computer SystemsJerome H. Saltzer, Michael D. Schroeder.
http://web.mit.edu/Saltzer/www/publications/protection/
REF-526
Complete MediationSean Barnum, Michael Gegick.
https://web.archive.org/web/20221006191503/https://www.cisa.gov/uscert/bsi/articles/knowledge/principles/complete-mediation
Gửi
| Tên | Tổ chức | Ngày | Ngày phát hành | Version |
|---|---|---|---|---|
| Pascal Meunier | Purdue University | Draft 8 |
Sửa đổi
| Tên | Tổ chức | Ngày | Bình luận |
|---|---|---|---|
| Eric Dalci | Cigital | updated Time_of_Introduction | |
| CWE Content Team | MITRE | updated Common_Consequences, Relationships, Observed_Example, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Description, Name | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Name | |
| CWE Content Team | MITRE | updated Common_Consequences, Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Potential_Mitigations | |
| CWE Content Team | MITRE | updated Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Causal_Nature | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated References | |
| CWE Content Team | MITRE | updated Description, Relationships | |
| CWE Content Team | MITRE | updated References, Relationships, Time_of_Introduction | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Demonstrative_Examples |
