ROHNP: Memory-Cache Side-Channel Attack on DSA and ECDSA Signatures in LibreSSL

CVE-2018-12434 · LOW Severity

AV:L/AC:M/AU:N/C:P/I:N/A:N

LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

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