CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')
When the product accesses the resource using an incompatible type, this could trigger logical errors because the resource does not have expected properties. In languages without memory safety, such as C and C++, type confusion can lead to out-of-bounds memory access.
While this weakness is frequently associated with unions when parsing data with many different embedded object types in C, it can be present in any application that can interpret the same variable or memory location in multiple ways.
This weakness is not unique to C and C++. For example, errors in PHP applications can be triggered by providing array parameters when scalars are expected, or vice versa. Languages such as Perl, which perform automatic conversion of a variable of one type when it is accessed as if it were another type, can also contain these issues.
Modes of Introduction
Phase | Note |
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Implementation |
Applicable Platforms
Type | Class | Name | Prevalence |
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Language | C | ||
Language | C++ |
Relationships
View | Weakness | |||||||
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# ID | View | Status | # ID | Name | Abstraction | Structure | Status | |
CWE-1000 | Research Concepts | Draft | CWE-704 | Incorrect Type Conversion or Cast | Class | Simple | Incomplete | |
CWE-1003 | Weaknesses for Simplified Mapping of Published Vulnerabilities | Incomplete | CWE-704 | Incorrect Type Conversion or Cast | Class | Simple | Incomplete | |
CWE-1000 | Research Concepts | Draft | CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | Class | Simple | Stable |
CVEs Published
CVSS Severity
CVSS Severity - By Year
CVSS Base Score
# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | Exploits | PoC | Pubblication Date | Modification Date |
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# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | PoC | Pubblication Date | Modification Date |