CVE-2018-12435

PoC —

CVSS 3.0

5.9 medium

EPSS

<1%p41

Published

Jun 15, 2018 (Jun 15, 2018)

Modified

Jun 17, 2026

Description

Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Vendors: botan project
Products: botan
Weakness: CWE-200
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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