PT-2018-11174 · Sun · Elliptic Curve Cryptography Library

Published 2018-06-15 · Updated 2021-03-09 · CVE-2018-12438

Positive Technologies (AI Summary)

CVSS v2.0

1.9

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions Elliptic Curve Cryptography library (aka sunec or libsunec) (affected versions not specified)

Description The issue allows a memory-cache side-channel attack on ECDSA signatures, also known as the Return Of the Hidden Number Problem or ROHNP. An attacker can discover an ECDSA key if they have access to either the local machine or a different virtual machine on the same physical host.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Information Disclosure

Weakness Enumeration

CWE-320

CWE-200

Related Identifiers

CVE-2018-12438

Affected Products

Elliptic Curve Cryptography Library

References · 2

• 🔥 https://nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-12438 · Security Note