CVE Database›Document archive›CVE-2018-12437

CVE-2018-12437

libtomcrypt: memory-cache side-channel attack on ECDSA signatures

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Severity

Unknown

Red Hat Product Security

5.5

CVSS 3.0

Review impact separately from score.

Published · June 13, 2018

Updated · June 6, 2026

Description

LibTomCrypt through 1.18.1 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.

Statement

This flaw was found to be a duplicate of CVE-2018-0495. Please see https://access.redhat.com/security/cve/CVE-2018-0495 for information about affected products and security errata.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.5
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE-385 · Covert Timing Channel