Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/115617
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Conference paper |
Title: | Another flip in the wall of Rowhammer defenses |
Author: | Gruss, D. Lipp, M. Schwarz, M. Genkin, D. Juffinger, J. O'Connell, S. Schoechl, W. Yarom, Y. |
Citation: | Proceedings / IEEE Symposium on Security and Privacy; sponsored by IEEE Computer Society, IEEE Computer Society Technical Committee on Security and Privacy in cooperation with the International Association for Cryptologic Research (IARC..., 2018, vol.2018-May, pp.245-261 |
Publisher: | IEEE |
Issue Date: | 2018 |
Series/Report no.: | IEEE Symposium on Security and Privacy |
ISBN: | 9781538643525 |
ISSN: | 1081-6011 2375-1207 |
Conference Name: | 39th IEEE Symposium on Security and Privacy (SP) (20 May 2018 - 23 May 2018 : San Francisco, CA) |
Statement of Responsibility: | Daniel Gruss, Moritz Lipp, Michael Schwarz, Daniel Genkin, Jonas Juffinger, Sioli O'Connell, Wolfgang Schoechl, and Yuval Yarom |
Abstract: | The Rowhammer bug allows unauthorized modification of bits in DRAM cells from unprivileged software, enabling powerful privilege-escalation attacks. Sophisticated Rowhammer countermeasures have been presented, aiming at mitigating the Rowhammer bug or its exploitation. However, the state of the art provides insufficient insight on the completeness of these defenses. In this paper, we present novel Rowhammer attack and exploitation primitives, showing that even a combination of all defenses is ineffective. Our new attack technique, one-location hammering, breaks previous assumptions on requirements for triggering the Rowhammer bug, i.e., we do not hammer multiple DRAM rows but only keep one DRAM row constantly open. Our new exploitation technique, opcode flipping, bypasses recent isolation mechanisms by flipping bits in a predictable and targeted way in userspace binaries. We replace conspicuous and memory-exhausting spraying and grooming techniques with a novel reliable technique called memory waylaying. Memory waylaying exploits system-level optimizations and a side channel to coax the operating system into placing target pages at attacker-chosen physical locations. Finally, we abuse Intel SGX to hide the attack entirely from the user and the operating system, making any inspection or detection of the attack infeasible. Our Rowhammer enclave can be used for coordinated denial-of-service attacks in the cloud and for privilege escalation on personal computers. We demonstrate that our attacks evade all previously proposed countermeasures for commodity systems. |
Rights: | © 2018, Daniel Gruss. Under license to IEEE. |
DOI: | 10.1109/SP.2018.00031 |
Published version: | http://dx.doi.org/10.1109/sp.2018.00031 |
Appears in Collections: | Aurora harvest 3 Computer Science publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.