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.
Published: 2018-06-15
Score: 4.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2018-4408 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.
History

Fri, 05 Jun 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Trustedfirmware
Trustedfirmware op-tee
CPEs cpe:2.3:o:linaro:op-tee:*:*:*:*:*:*:*:* cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*
Vendors & Products Linaro
Linaro op-tee
Trustedfirmware
Trustedfirmware op-tee

Subscriptions

Libtom Libtomcrypt
Trustedfirmware Op-tee
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T08:38:06.074Z

Reserved: 2018-06-14T00:00:00.000Z

Link: CVE-2018-12437

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-15T02:29:00.487

Modified: 2026-06-17T01:37:47.087

Link: CVE-2018-12437

cve-icon Redhat

Severity :

Publid Date: 2018-06-13T00:00:00Z

Links: CVE-2018-12437 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses