名稱: Object Model Violation: Just One of Equals and Hashcode Defined

The product does not maintain equal hashcodes for equal objects.

一般資訊

背景詳情

引入方式

Implementation

適用平台

程式語言

名稱： Java (Undetermined)

常見後果

範圍	影響	可能性
Integrity Other	Other 注意：If this invariant is not upheld, it is likely to cause trouble if objects of this class are stored in a collection. If the objects of the class in question are used as a key in a Hashtable or if they are inserted into a Map or Set, it is critical that equal objects have equal hashcodes.

潛在緩解措施

Phases : Implementation
Both Equals() and Hashcode() should be defined.

偵測方法

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.)
有效性 : High

漏洞對應備注

理由說明 : 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.
備註 : 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.

提交

名稱	機構	日期	發布日期	Version
CWE Community		2006-12-15 +00:00	2006-12-15 +00:00	Draft 5

修改記錄

名稱	機構	日期	備註
Eric Dalci	Cigital	2008-07-01 +00:00	updated Potential_Mitigations, Time_of_Introduction
CWE Content Team	MITRE	2008-09-08 +00:00	updated Common_Consequences, Relationships, Other_Notes
CWE Content Team	MITRE	2009-10-29 +00:00	updated Common_Consequences, Description, Other_Notes
CWE Content Team	MITRE	2010-12-13 +00:00	updated Common_Consequences
CWE Content Team	MITRE	2011-03-29 +00:00	updated Description
CWE Content Team	MITRE	2011-06-01 +00:00	updated Common_Consequences, Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2012-05-11 +00:00	updated Relationships, Taxonomy_Mappings
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	2018-03-27 +00:00	updated Relationships
CWE Content Team	MITRE	2019-01-03 +00:00	updated Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2020-02-24 +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, Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2024-02-29 +00:00	updated Type
CWE Content Team	MITRE	2025-12-11 +00:00	updated Weakness_Ordinalities
CWE Content Team	MITRE	2026-10-28 +00:00	updated Background_Details, Description

CWE-581 詳細資料

CWE-581