名稱: Critical Public Variable Without Final Modifier

The product has a critical public variable that is not final.

一般資訊

背景詳情

引入方式

Implementation

適用平台

程式語言

類別： Object-Oriented (Undetermined)
名稱： Java (Undetermined)
名稱： C++ (Undetermined)

常見後果

範圍	影響	可能性
Integrity	Modify Application Data 注意：If a field is non-final and public, it can be changed once the value is set by any function that has access to the class that contains the field. The object could potentially be tampered with. This could lead to a vulnerability if other parts of the program make assumptions about the contents of the field.
Confidentiality	Read Application Data 注意：The object could potentially allow the object to be read.

潛在緩解措施

Phases : Implementation
Declare all public fields as final when possible, especially if it is used to maintain internal state of an Applet or of classes used by an Applet. If a field must be public, then perform all appropriate sanity checks before accessing the field from your code.

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 Variant 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.

參考資料

REF-6

Seven Pernicious Kingdoms: A Taxonomy of Software Security Errors
Katrina Tsipenyuk, Brian Chess, Gary McGraw.
https://cwe.mitre.org/documents/sources/SevenPerniciousKingdoms.pdf

提交

名稱	機構	日期	發布日期	Version
7 Pernicious Kingdoms		2006-07-19 +00:00	2006-07-19 +00:00	Draft 3

修改記錄

名稱	機構	日期	備註
Eric Dalci	Cigital	2008-07-01 +00:00	updated Time_of_Introduction
CWE Content Team	MITRE	2008-09-08 +00:00	updated Applicable_Platforms, Common_Consequences, Description, Likelihood_of_Exploit, Relationships, Other_Notes, Taxonomy_Mappings
CWE Content Team	MITRE	2008-11-24 +00:00	updated Background_Details, Demonstrative_Examples, Description, Other_Notes, Potential_Mitigations
CWE Content Team	MITRE	2009-05-27 +00:00	updated Background_Details, Demonstrative_Examples, Description, Relationships
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	2014-07-30 +00:00	updated Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2019-01-03 +00:00	updated Taxonomy_Mappings
CWE Content Team	MITRE	2020-02-24 +00:00	updated References, Relationships
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	2025-12-11 +00:00	updated Applicable_Platforms, Relationships, Weakness_Ordinalities
CWE Content Team	MITRE	2026-10-28 +00:00	updated Common_Consequences, Description, References, Relationships

CWE-493 詳細資料

CWE-493