CWE-749 is Exposed Dangerous Method or Function. The flaw arises when The product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted. The database currently holds 59 vulnerabilities mapped to CWE-749 and none of them are in the CISA Known Exploited Vulnerabilities catalog.
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No vulnerability data in CISA KEV for CWE-749
The product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.
This weakness can lead to a wide variety of resultant weaknesses, depending on the behavior of the exposed method. It can apply to any number of technologies and approaches, such as ActiveX controls, Java functions, IOCTLs, and so on.
The exposure can occur in a few different ways:
The function/method was never intended to be exposed to outside actors.
The function/method was only intended to be accessible to a limited set of actors, such as Internet-based access from a single web site.
| Impact | Scope | Explanation |
|---|---|---|
| Gain Privileges or Assume Identity, Read Application Data, Modify Application Data, Execute Unauthorized Code or Commands, Other | Integrity, Confidentiality, Availability, Access Control, Other | Exposing critical functionality essentially provides an attacker with the privilege level of the exposed functionality. This could result in the modification or exposure of sensitive data or possibly even execution of arbitrary code. |
| 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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