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L1D Cache Side-channal on Nanhu #2534

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nieeka opened this issue Dec 7, 2023 · 1 comment
Open

L1D Cache Side-channal on Nanhu #2534

nieeka opened this issue Dec 7, 2023 · 1 comment
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security Some designs may introduce security issues

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@nieeka
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nieeka commented Dec 7, 2023

Type of issue: bug report

Impact: L1D Cache

Compile: make emu -j32

Used boom commit: f0d8a1c

How to reproduce the attack: AM workload

Development Phase: proposal

I found a L1D Cache Side-channal on Nanhu.
The attack relies on the csr mcycle and PLRU eviction algorithm.

The attached PoC attack is a Information Disclosure type of attack where an attacker leaks a secret from the L1D cache.

It still works and almost correctly retrieves the secret value.

dcachetest.zip
@wakafa1
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wakafa1 commented Dec 8, 2023

Received and under reproduce & repair, thank you for your report.

@wakafa1 wakafa1 added the security Some designs may introduce security issues label Dec 8, 2023
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@wakafa1 @nieeka