CWE-268
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Fique informado sobre quaisquer alterações para um CWE específico.
Nome: Privilege Chaining
Two distinct privileges, roles, capabilities, or rights can be combined in a way that allows an entity to perform unsafe actions that would not be allowed without that combination.
Informações Gerais
Modos de Introdução
Architecture and DesignImplementation : REALIZATION: This weakness is caused during implementation of an architectural security tactic.
Operation
Plataformas Aplicáveis
Linguagem
Class: Not Language-Specific (Undetermined)Consequências Comuns
| Escopo | Impacto | Probabilidade |
|---|---|---|
| Access Control | Gain Privileges or Assume Identity Note: A user can be given or gain access rights of another user. This can give the user unauthorized access to sensitive information including the access information of another user. |
Exemplos Observados
| Referências | Descrição |
|---|---|
CVE-2005-1736 | Chaining of user rights. |
CVE-2002-1772 | Gain certain rights via privilege chaining in alternate channel. |
CVE-2005-1973 | Application is allowed to assign extra permissions to itself. |
CVE-2003-0640 | "operator" user can overwrite usernames and passwords to gain admin privileges. |
Mitigações Potenciais
Phases : Architecture and DesignConsider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.
Phases : Architecture and Design // Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Phases : Architecture and Design // Operation
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Notas de Mapeamento de Vulnerabilidade
Justificativa : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.Comentário : 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.
Notas
There is some conceptual overlap with Unsafe Privilege.Referências
REF-76
Least PrivilegeSean Barnum, Michael Gegick.
https://web.archive.org/web/20211209014121/https://www.cisa.gov/uscert/bsi/articles/knowledge/principles/least-privilege
Submissão
| Nome | Organização | Data | Data de lançamento | Version |
|---|---|---|---|---|
| PLOVER | Draft 3 |
Modificações
| Nome | Organização | Data | Comentário |
|---|---|---|---|
| Eric Dalci | Cigital | updated Time_of_Introduction | |
| CWE Content Team | MITRE | updated Relationships, Other_Notes, Relationship_Notes, Taxonomy_Mappings, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Other_Notes, Potential_Mitigations, Research_Gaps | |
| CWE Content Team | MITRE | updated Potential_Mitigations | |
| CWE Content Team | MITRE | updated Common_Consequences | |
| CWE Content Team | MITRE | updated Common_Consequences, Demonstrative_Examples, Relationships | |
| CWE Content Team | MITRE | updated Potential_Mitigations, References | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Causal_Nature, Modes_of_Introduction, References, Relationships | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Research_Gaps | |
| CWE Content Team | MITRE | updated References | |
| CWE Content Team | MITRE | updated References, Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes, Relationships |
