BF Specification of CWE-468 Example 1
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//generated//
Wrong Code to Cast (char *)(p + 1) instead of (char *)p + 1 via Pass In Pointer Primitive in Codebase Local leads to Wrong Type (int instead of char)
, which propagates to Wrong Argument Type Ad-hoc Bind Call (+ operator) Object Primitive Codebase in Local that results in Wrong Overloaded Function Bound (+(int*,int) instead of +(char*,int))
, which propagates to Wrong Overloaded Function Bound Operator Calculate Pointer Bound Codebase in Local that results in Wrong Result (( Pointer position ))
, which propagates to Wrong Index Direct Reposition Stack Actual Codebase in Userland that results in Overbound Pointer
, which propagates to Overbound Pointer Direct Read Litle Stack Actual Codebase in Userland that results in Buffer Over-Read , which can be exploited toward Information Exposure (IEX) (confidentiality loss) security failure.
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| Class | Definition |
| Operation | Definition |
| Cause/Consequence | Definition |
| Code Bug | Code Bug type – An error in the implementation of an operation – proper operands over an improper operation. It is the roor cause of a security vulnerability. Must be fixed to resolve the vulnerability. |
| Wrong Code | Wrong Code bug - An incorrect operator or function is used, or an incorrect data type is specified. |
| Type | Type error (or fault) type – The set or range of allowed values of an entity is wrong or the operations allowed on them are wrong. |
| Wrong Type | Wrong Type error (or fault) – A data type range or structure is not correct. |
| Wrong Argument Type | Wrong Argument Type error (or fault) – An argument to an overloaded function is of incorrect data type. |
| Name Error/Fault | Name error (or fault) type – The fully resolved name of an entity is wrong. |
| Wrong Overloaded Function Bound | Wrong Overloaded Function Bound error (or fault) – Wrong overloaded implementation is bound due to wrong function arguments. |
| Data Error/Fault | Data error (or fault) type – The data of an object has harmed semantics or inconsistent or wrong value. |
| Wrong Result | Wrong Result error (or fault) – Incorrect value – from type conversion or computation. |
| Wrong Index | Wrong Index error (or fault) – Incorrect index position – hardcoded or from computation. |
| Address Error/Fault | Address error (or fault) type – The address of an object is wrong. |
| Overbound Pointer | Overbound Pointer error (or fault) – Holds an address that is above the upper boundary of its object. |
| Memory Corruption/Disclosure Final Error | Memory Corruption/Disclosure final error/exploit vector type – An exploitable or undefined system behavior caused by memory addressing, allocation, use, or deallocation bugs. |
| Buffer Over-Read | Buffer Over-Read final error – Read data above the upper bound of an object. |
| Operation Attribute | Definition |
| Mechanism | Mechanism operation attribute type – Shows how the operation with a bug or faulty operand is performed. |
| Pass In | Pass In operation attribute – The operation is via in arguments' values to a function/ operator. |
| Ad-hoc Bind | Ad-hoc Bind operation attribute – The operation resolves an overloaded function via signature and sets its implementation. |
| Operator | Operator operation attribute – The operation is via a function with a symbolic name that implements a mathematical, relational or logical operation. |
| Direct | Direct operation attribute – The operation is on a particular object element. |
| Source Code | Source Code operation attribute type – Shows where the code of the operation with a bug or faulty operand resides within the software, firmware, or hardware. |
| Codebase | Codebase operation attribute – The operation is in the programmer's code - in the application itself. |
| Execution Space | Execution Space operation attribute type – Shows where the operation with a bug or faulty operand is executed and the privilege level at which it runs. |
| Local | Local operation attribute – The bugged code runs in an environment with access control policy with limited (local user) permission. |
| Userland | Userland operation attribute – The bugged code runs in an environment with privilege levels, but in unprivileged mode (e.g., ring 3 in x86 architecture). |
| Operand Attribute | Definition |
| Data Kind | Data Kind operand attribute type – Shows what the type or category of data is. |
| Pointer | Pointer operand attribute – A holder of the memory address of an object. |
| Type Kind | Type Kind operand attribute type – Shows what the data type composition is. |
| Primitive | Primitive operand attribute – A scalar data type that mimics the hardware units - e.g., int (long, short, signed), float, double, string, Boolean. A primitive data type is only language defined and is not built from other data types. |
| Name Kind | Name Kind operand attribute type – Shows what the entity with this name is. |
| Object | Object operand attribute – A memory region used to store data. |
| Name State | Name State operand attribute type – Shows what the stage of the entity name is. |
| Bound | Bound operand attribute – The name is linked to a declared (or inferred) data type, a defined object's data, or a called function implementation. |
| Address State | Address State operand attribute type – Shows where the address is (i.e., its location) in the memory layout. |
| Stack | The object is a non-static local variable (defined in a function, a passed parameter, or a function return address). |
| Size Kind | Size Kind operand attribute type – Shows what is used as the size or length (i.e., the number of elements) of an object - e.g., as the limit for traversal over the elements. |
| Actual | Actual operand attribute – The real size or length (i.e., the number of elements) of the allocated memory for an object. |
| Address | |
| Litle |