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Update BufferAccessWithIncorrectLengthValue.ql

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ihsinme
2022-05-30 12:26:26 +03:00
committed by GitHub
parent 475e36e6fc
commit d489c12014
1 changed files with 4 additions and 5 deletions
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9
cpp/ql/src/experimental/Security/CWE/CWE-805/BufferAccessWithIncorrectLengthValue.ql
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@@ -62,11 +62,10 @@ predicate numberArgument(Function f, int bpos, int spos) {
from FunctionCall fc
where
exists(ArrayType at, int b, int s, Variable vr |
numberArgument(fc.getTarget(), b, s) and
fc.getArgument(s).getValue().toInt() > at.getByteSize() and
vr.getADeclarationEntry().getType() = at and
fc.getArgument(b).(VariableAccess).getTarget() = vr
exists(ArrayType array, int bufArgPos, int sizeArgPos |
numberArgument(fc.getTarget(), bufArgPos, sizeArgPos) and
fc.getArgument(sizeArgPos).getValue().toInt() > array.getByteSize() and
fc.getArgument(bufArgPos).(VariableAccess).getTarget().getADeclarationEntry().getType() = array
)
select fc,
"Access beyond the bounds of the allocated memory is possible, the size argument used is greater than the size of the buffer."