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C++: Add FP for CWE-193.

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This commit is contained in:
Mathias Vorreiter Pedersen
2022-09-26 11:53:03 +01:00
parent 73f279d6e7
commit 1c55bbe2e8
2 changed files with 18 additions and 0 deletions
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8
cpp/ql/test/experimental/query-tests/Security/CWE/CWE-193/pointer-deref/InvalidPointerDeref.expected
View File

@@ -677,6 +677,13 @@ edges
| test.cpp:213:6:213:6 | Load | test.cpp:213:5:213:6 | * ... |
| test.cpp:213:6:213:6 | Load | test.cpp:213:5:213:13 | Store: ... = ... |
| test.cpp:213:6:213:6 | Load | test.cpp:213:5:213:13 | Store: ... = ... |
| test.cpp:221:17:221:22 | call to malloc | test.cpp:222:5:222:5 | Load |
| test.cpp:222:5:222:5 | Load | test.cpp:222:5:222:12 | access to array |
| test.cpp:222:5:222:5 | Load | test.cpp:222:5:222:12 | access to array |
| test.cpp:222:5:222:5 | Load | test.cpp:222:5:222:12 | access to array |
| test.cpp:222:5:222:5 | Load | test.cpp:222:5:222:12 | access to array |
| test.cpp:222:5:222:12 | access to array | test.cpp:222:5:222:18 | Store: ... = ... |
| test.cpp:222:5:222:12 | access to array | test.cpp:222:5:222:18 | Store: ... = ... |
#select
| test.cpp:6:14:6:15 | Load: * ... | test.cpp:4:15:4:20 | call to malloc | test.cpp:6:14:6:15 | Load: * ... | This read might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:4:15:4:20 | call to malloc | call to malloc | test.cpp:5:19:5:22 | size | size |
| test.cpp:8:14:8:21 | Load: * ... | test.cpp:4:15:4:20 | call to malloc | test.cpp:8:14:8:21 | Load: * ... | This read might be out of bounds, as the pointer might be equal to $@ + $@ + 1. | test.cpp:4:15:4:20 | call to malloc | call to malloc | test.cpp:5:19:5:22 | size | size |
@@ -695,3 +702,4 @@ edges
| test.cpp:171:9:171:14 | Store: ... = ... | test.cpp:143:18:143:23 | call to malloc | test.cpp:171:9:171:14 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:143:18:143:23 | call to malloc | call to malloc | test.cpp:144:29:144:32 | size | size |
| test.cpp:201:5:201:19 | Store: ... = ... | test.cpp:194:23:194:28 | call to malloc | test.cpp:201:5:201:19 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:194:23:194:28 | call to malloc | call to malloc | test.cpp:195:21:195:23 | len | len |
| test.cpp:213:5:213:13 | Store: ... = ... | test.cpp:205:23:205:28 | call to malloc | test.cpp:213:5:213:13 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:205:23:205:28 | call to malloc | call to malloc | test.cpp:206:21:206:23 | len | len |
| test.cpp:222:5:222:18 | Store: ... = ... | test.cpp:221:17:221:22 | call to malloc | test.cpp:222:5:222:18 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:221:17:221:22 | call to malloc | call to malloc | test.cpp:222:7:222:11 | ... - ... | ... - ... |

10
cpp/ql/test/experimental/query-tests/Security/CWE/CWE-193/pointer-deref/test.cpp
View File

@@ -212,3 +212,13 @@ void test13(unsigned len, unsigned index) {
*q = '\0'; // BAD
}
bool unknown();
void test14(unsigned long n, char *p) {
while (unknown()) {
n++;
p = (char *)malloc(n);
p[n - 1] = 'a'; // GOOD [FALSE POSITIVE]
}
}