Safecracker: Leaking Secrets through Compressed Caches
Safecracker: Leaking Secrets through Compressed Caches
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Safecracker:通过压缩缓存泄露秘密
DOI:
10.1145/3373376.3378453
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Sanchez, Daniel
中科院分区:
文献类型:
--
作者:
Tsai, Po-An;Sanchez, Andres;Fletcher, Christopher W.;Sanchez, Daniel
The hardware security crisis brought on by recent speculative execution attacks has shown that it is crucial to adopt a security-conscious approach to architecture research, analyzing the security of promising architectural techniques before they are deployed in hardware. This paper offers the first security analysis of cache compression, one such promising technique that is likely to appear in future processors. We find that cache compression is insecure because the compressibility of a cache line reveals information about its contents. Compressed caches introduce a new side channel that is especially insidious, as simply storing data transmits information about it. We present two techniques that make attacks on compressed caches practical. Pack+Probe allows an attacker to learn the compressibility of victim cache lines, and Safecracker leaks secret data efficiently by strategically changing the values of nearby data. Our evaluation on a proof-of-concept application shows that, on a common compressed cache architecture, Safecracker lets an attacker compromise a secret key in under 10ms, and worse, leak large fractions of program memory when used in conjunction with latent memory safety vulnerabilities. We also discuss potential ways to close this new compression-induced side channel. We hope this work prevents insecure cache compression techniques from reaching mainstream processors.
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DOI:
10.1145/2976749.2978374
发表时间:
2016
期刊:
Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications Security
影响因子:
--
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影响因子:
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DOI:
--
发表时间:
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期刊:
Micro
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DOI:
--
发表时间:
2009
期刊:
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影响因子:
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DOI:
10.14722/ndss.2019.23061
发表时间:
2018
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
--
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通讯作者:
Jiyong Yu;Lucas Hsiung;Mohamad El Hajj;Christopher W. Fletcher