CAPEC-128 Metadata
Likelihood of Attack
High
Typical Severity
Medium
Overview
Summary
An attacker takes advantage of the structure of integer variables to cause these variables to assume values that are not expected by an application. For example, adding one to the largest positive integer in a signed integer variable results in a negative number. Negative numbers may be illegal in an application and the application may prevent an attacker from providing them directly, but the application may not consider that adding two positive numbers can create a negative number do to the structure of integer storage formats.
Prerequisites
The target application must have an integer variable for which only some of the possible integer values are expected by the application and where there are no checks on the value of the variable before use. The attacker must be able to manipulate the targeted integer variable such that normal operations result in non-standard values due to the storage structure of integers.
Potential Solutions / Mitigations
No specific solutions listed.
Related Weaknesses (CWE)
| CWE ID | Description |
|---|---|
| CWE-682 | Incorrect Calculation |
Related CAPECs
| CAPEC ID | Description |
|---|---|
| CAPEC-153 | An attacker exploits a weakness in input validation by controlling the format, structure, and composition of data to an input-processing interface. By supplying input of a non-standard or unexpected form an attacker can adversely impact the security of the target. |
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