VULNERABILITY INTELLIGENCE

CVE-2018-12439

CVSS score4.7 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2018-06-15
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

MatrixSSL through 3.9.5 Open allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Weakness classification

  • nvd@nist.gov: CWE-200

Primary references