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| 1 | +// Associated with CWE-190: Integer Overflow or Wraparound. http://cwe.mitre.org/data/definitions/190.html |
| 2 | + |
| 3 | +typedef unsigned long size_t; |
| 4 | +typedef struct {} FILE; |
| 5 | + |
| 6 | +void *malloc(size_t size); |
| 7 | +void *realloc(void *ptr, size_t size); |
| 8 | +int atoi(const char *nptr); |
| 9 | + |
| 10 | +struct MyStruct |
| 11 | +{ |
| 12 | + char data[256]; |
| 13 | +}; |
| 14 | + |
| 15 | +namespace std |
| 16 | +{ |
| 17 | + template<class charT> struct char_traits; |
| 18 | + |
| 19 | + template <class charT, class traits = char_traits<charT> > |
| 20 | + class basic_istream /*: virtual public basic_ios<charT,traits> - not needed for this test */ { |
| 21 | + public: |
| 22 | + basic_istream<charT,traits>& operator>>(int& n); |
| 23 | + }; |
| 24 | + |
| 25 | + typedef basic_istream<char> istream; |
| 26 | + |
| 27 | + extern istream cin; |
| 28 | +} |
| 29 | + |
| 30 | +int getTainted() { |
| 31 | + int i; |
| 32 | + |
| 33 | + std::cin >> i; |
| 34 | + |
| 35 | + return i; |
| 36 | +} |
| 37 | + |
| 38 | +int main(int argc, char **argv) { |
| 39 | + int tainted = atoi(argv[1]); |
| 40 | + |
| 41 | + MyStruct *arr1 = (MyStruct *)malloc(sizeof(MyStruct)); // GOOD |
| 42 | + MyStruct *arr2 = (MyStruct *)malloc(tainted); // BAD [NOT DETECTED] |
| 43 | + MyStruct *arr3 = (MyStruct *)malloc(tainted * sizeof(MyStruct)); // BAD |
| 44 | + MyStruct *arr4 = (MyStruct *)malloc(getTainted() * sizeof(MyStruct)); // BAD [NOT DETECTED] |
| 45 | + MyStruct *arr5 = (MyStruct *)malloc(sizeof(MyStruct) + tainted); // BAD [NOT DETECTED] |
| 46 | + |
| 47 | + int size = tainted * 8; |
| 48 | + char *chars1 = (char *)malloc(size); // BAD [NOT DETECTED] |
| 49 | + char *chars2 = new char[size]; // BAD [NOT DETECTED] |
| 50 | + char *chars3 = new char[8]; // GOOD |
| 51 | + |
| 52 | + arr1 = (MyStruct *)realloc(arr1, sizeof(MyStruct) * tainted); // BAD |
| 53 | + |
| 54 | + size = 8; |
| 55 | + chars3 = new char[size]; // GOOD |
| 56 | + |
| 57 | + return 0; |
| 58 | +} |
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