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| Content Provider | ACM Digital Library |
|---|---|
| Author | Zhang, Lintao Zhou, Lidong Costa, Manuel Castro, Miguel Peinado, Marcus |
| Abstract | Attackers exploit software vulnerabilities to control or crash programs. Bouncer uses existing software instrumentation techniques to detect attacks and it generates filters automatically to block exploits of the target vulnerabilities. The filters are deployed automatically by instrumenting system calls to drop exploit messages. These filters introduce low overhead and they allow programs to keep running correctly under attack. Previous work computes filters using symbolic execution along the path taken by a sample exploit, but attackers can bypass these filters by generating exploits that follow a different execution path. Bouncer introduces three techniques to generalize filters so that they are harder to bypass: a new form of program slicing that uses a combination of static and dynamic analysis to remove unnecessary conditions from the filter; symbolic summaries for common library functions that characterize their behavior succinctly as a set of conditions on the input; and generation of alternative exploits guided by symbolic execution. Bouncer filters have low overhead, they do not have false positives by design, and our results show that Bouncer can generate filters that block all exploits of some real-world vulnerabilities. |
| Ending Page | 130 |
| Page Count | 14 |
| Starting Page | 117 |
| File Format | PDF MP4 MP2 / MPA / MP3 |
| ISSN | 01635980 |
| DOI | 10.1145/1323293.1294274 |
| Journal | ACM SIGOPS Operating Systems Review (OPSR) |
| Issue Number | 6 |
| Volume Number | 41 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1975-04-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Symbolic execution Precondition slicing |
| Content Type | Audio Text |
| Resource Type | Article |
| Subject | Computer Networks and Communications Hardware and Architecture Information Systems |
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