Exterminator: Automatically Correcting Memory Errors with High Probability
Publication Date
2008
Journal or Book Title
COMMUNICATIONS OF THE ACM
Abstract
Programs written in C and C++ are susceptible to memory errors, including buffer overflows and dangling pointers. These errors, which can lead to crashes, erroneous execution, and security vulnerabilities, are notoriously costly to repair. Tracking down their location in the source code is difficult, even when the full memory state of the program is available. Once the errors are finally found, fixing them remains challenging: even for critical security-sensitive bugs, the average time between initial reports and the issuance of a patch is nearly 1 month.
We present Exterminator, a system that automatically corrects heap-based memory errors without programmer intervention. Exterminator exploits randomization to pinpoint errors with high precision. From this information, Exterminator derives runtime patches that fix these errors both in current and subsequent executions. In addition, Exterminator enables collaborative bug correction by merging patches generated by multiple users. We present analytical and empirical results that demonstrate Exterminator's effectiveness at detecting and correcting both injected and real faults.
DOI
https://doi.org/10.1145/1409360.1409382
Pages
87-95
Volume
51
Issue
12
Recommended Citation
Novark, G; Berger, ED; and Zorn, BG, "Exterminator: Automatically Correcting Memory Errors with High Probability" (2008). COMMUNICATIONS OF THE ACM. 373.
https://doi.org/10.1145/1409360.1409382