名稱: Improper Clearing of Heap Memory Before Release

The product uses realloc() to resize buffers that contain sensitive information.

一般資訊

背景詳情

引入方式

Implementation

適用平台

程式語言

類別： Memory-Unsafe (Undetermined)
名稱： C (Undetermined)
名稱： C++ (Undetermined)

常見後果

範圍	影響	可能性
Confidentiality Other	Read Memory, Other

觀察到的案例

參考資料	描述
CVE-2019-3733	Cryptography library does not clear heap memory before release

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.)

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
	KDM Analytics	2008-08-01 +00:00	added/updated white box definitions
CWE Content Team	MITRE	2008-09-08 +00:00	updated Applicable_Platforms, Name, Relationships, Other_Notes, Taxonomy_Mappings
CWE Content Team	MITRE	2008-10-14 +00:00	updated Relationships
CWE Content Team	MITRE	2008-11-24 +00:00	updated Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2009-05-27 +00:00	updated Demonstrative_Examples, Name
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 Name
CWE Content Team	MITRE	2011-06-01 +00:00	updated Common_Consequences
CWE Content Team	MITRE	2011-09-13 +00:00	updated Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2012-05-11 +00:00	updated Relationships
CWE Content Team	MITRE	2014-07-30 +00:00	updated Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2017-11-08 +00:00	updated Relationships, Taxonomy_Mappings, White_Box_Definitions
CWE Content Team	MITRE	2020-02-24 +00:00	updated References, Relationships
CWE Content Team	MITRE	2021-10-28 +00:00	updated Demonstrative_Examples
CWE Content Team	MITRE	2023-04-27 +00:00	updated Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2024-02-29 +00:00	updated Observed_Examples
CWE Content Team	MITRE	2025-09-09 +00:00	updated Functional_Areas
CWE Content Team	MITRE	2025-12-11 +00:00	updated Applicable_Platforms, Detection_Factors, Weakness_Ordinalities
CWE Content Team	MITRE	2026-10-28 +00:00	updated Alternate_Terms, Background_Details, Common_Consequences, Description, Name, References

CWE-244 詳細資料

CWE-244