IntRepair: Informed Repairing of Integer Overflows

Integer overflows have threatened software applications for decades. Thus, in this paper, we propose a novel technique to provide automatic repairs of integer overflows in
C
source code. Our technique, based on static symbolic execution, fuses
detection
,
repair generation
and
validation
. This technique is implemented in a prototype named
IntRepair
. We applied
IntRepair
to 2,052
C
programs (approx. 1 million lines of code) contained in SAMATE's Juliet test suite and 50 synthesized programs that range up to 20 KLOC. Our experimental results show that
IntRepair
is able to effectively detect integer overflows and successfully repair them, while only increasing the source code (LOC) and binary (Kb) size by around 1 percent, respectively. Further, we present the results of a user study with 30 participants which shows that
IntRepair
repairs are more than 10x efficient as compared to manually generated code repairs.