CWE-908 is Use of Uninitialized Resource. The flaw arises when the product uses or accesses a resource that has not been initialized. The database currently holds 135 vulnerabilities mapped to CWE-908 and 1 of them are in the CISA Known Exploited Vulnerabilities catalog.
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The product uses or accesses a resource that has not been initialized.
When a resource has not been properly initialized, the product may behave unexpectedly. This may lead to a crash or invalid memory access, but the consequences vary depending on the type of resource and how it is used within the product.
| Impact | Scope | Explanation |
|---|---|---|
| Read Memory, Read Application Data | Confidentiality | When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party. |
| DoS: Crash, Exit, or Restart | Availability | The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend. |
| Method | Approach | Effectiveness |
|---|---|---|
| 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.) | High |
Below are representative vulnerabilities related to this CWE, prioritized by severity.
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