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Merge pull request #13271 from jketema/invalid-pointer-deref-fp-2

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C++: Add `cpp/invalid-pointer-deref` FP test case
This commit is contained in:
Mathias Vorreiter Pedersen
2023-05-24 08:05:58 -07:00
committed by GitHub
parent 92b408fbc1 9a467f9d4e
commit 4496fd58ae
2 changed files with 60 additions and 12 deletions
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22
cpp/ql/test/experimental/query-tests/Security/CWE/CWE-193/pointer-deref/InvalidPointerDeref.expected
View File

@@ -653,7 +653,24 @@ edges
| test.cpp:304:15:304:26 | new[] | test.cpp:308:5:308:6 | xs |
| test.cpp:308:5:308:6 | xs | test.cpp:308:5:308:11 | access to array |
| test.cpp:308:5:308:11 | access to array | test.cpp:308:5:308:29 | Store: ... = ... |
| test.cpp:313:16:313:29 | new[] | test.cpp:314:17:314:18 | xs |
| test.cpp:313:14:313:27 | new[] | test.cpp:314:15:314:16 | xs |
| test.cpp:325:14:325:27 | new[] | test.cpp:326:15:326:16 | xs |
| test.cpp:326:15:326:16 | xs | test.cpp:326:15:326:23 | ... + ... |
| test.cpp:326:15:326:16 | xs | test.cpp:326:15:326:23 | ... + ... |
| test.cpp:326:15:326:16 | xs | test.cpp:338:8:338:15 | * ... |
| test.cpp:326:15:326:16 | xs | test.cpp:341:8:341:17 | * ... |
| test.cpp:326:15:326:23 | ... + ... | test.cpp:342:8:342:17 | * ... |
| test.cpp:326:15:326:23 | ... + ... | test.cpp:342:8:342:17 | * ... |
| test.cpp:338:8:338:15 | * ... | test.cpp:342:8:342:17 | * ... |
| test.cpp:341:8:341:17 | * ... | test.cpp:342:8:342:17 | * ... |
| test.cpp:342:8:342:17 | * ... | test.cpp:333:5:333:21 | Store: ... = ... |
| test.cpp:342:8:342:17 | * ... | test.cpp:341:5:341:21 | Store: ... = ... |
| test.cpp:347:14:347:27 | new[] | test.cpp:348:15:348:16 | xs |
| test.cpp:348:15:348:16 | xs | test.cpp:350:16:350:19 | ... ++ |
| test.cpp:348:15:348:16 | xs | test.cpp:350:16:350:19 | ... ++ |
| test.cpp:350:16:350:19 | ... ++ | test.cpp:350:15:350:19 | Load: * ... |
| test.cpp:350:16:350:19 | ... ++ | test.cpp:350:16:350:19 | ... ++ |
| test.cpp:350:16:350:19 | ... ++ | test.cpp:350:16:350:19 | ... ++ |
subpaths
#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 |
@@ -679,3 +696,6 @@ subpaths
| test.cpp:264:13:264:14 | Load: * ... | test.cpp:260:13:260:24 | new[] | test.cpp:264:13:264:14 | Load: * ... | This read might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:260:13:260:24 | new[] | new[] | test.cpp:261:19:261:21 | len | len |
| test.cpp:274:5:274:10 | Store: ... = ... | test.cpp:270:13:270:24 | new[] | test.cpp:274:5:274:10 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:270:13:270:24 | new[] | new[] | test.cpp:271:19:271:21 | len | len |
| test.cpp:308:5:308:29 | Store: ... = ... | test.cpp:304:15:304:26 | new[] | test.cpp:308:5:308:29 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:304:15:304:26 | new[] | new[] | test.cpp:308:8:308:10 | ... + ... | ... + ... |
| test.cpp:333:5:333:21 | Store: ... = ... | test.cpp:325:14:325:27 | new[] | test.cpp:333:5:333:21 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:325:14:325:27 | new[] | new[] | test.cpp:326:20:326:23 | size | size |
| test.cpp:341:5:341:21 | Store: ... = ... | test.cpp:325:14:325:27 | new[] | test.cpp:341:5:341:21 | Store: ... = ... | This write might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:325:14:325:27 | new[] | new[] | test.cpp:326:20:326:23 | size | size |
| test.cpp:350:15:350:19 | Load: * ... | test.cpp:347:14:347:27 | new[] | test.cpp:350:15:350:19 | Load: * ... | This read might be out of bounds, as the pointer might be equal to $@ + $@. | test.cpp:347:14:347:27 | new[] | new[] | test.cpp:348:20:348:23 | size | size |

50
cpp/ql/test/experimental/query-tests/Security/CWE/CWE-193/pointer-deref/test.cpp
View File

@@ -310,15 +310,43 @@ void test21() {
}
void test22(unsigned size, int val) {
char *xs = new char[size];
char *end = xs + size; // GOOD
char **current = &end;
do
{
if( *current - xs < 1 ) // GOOD
return;
*--(*current) = 0; // GOOD
val >>= 8;
}
while( val > 0 );
char *xs = new char[size];
char *end = xs + size; // GOOD
char **current = &end;
do {
if (*current - xs < 1) // GOOD
return;
*--(*current) = 0; // GOOD
val >>= 8;
} while (val > 0);
}
void test23(unsigned size, int val) {
char *xs = new char[size];
char *end = xs + size;
char **current = &end;
if (val < 1) {
if(*current - xs < 1)
return;
*--(*current) = 0; // GOOD [FALSE POSITIVE]
return;
}
if (val < 2) {
if(*current - xs < 2)
return;
*--(*current) = 0; // GOOD [FALSE POSITIVE]
*--(*current) = 0; // GOOD
}
}
void test24(unsigned size) {
char *xs = new char[size];
char *end = xs + size;
if (xs < end) {
int val = *xs++; // GOOD [FALSE POSITIVE]
}
}