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MEDIUM · 4.9

CVE-2018-12438

The Elliptic Curve Cryptography library (aka sunec or libsunec) allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDS...

Vulnerability Description

The Elliptic Curve Cryptography library (aka sunec or libsunec) 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.

CVSS Score

4.9

MEDIUM

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
Libsunec ProjectLibsunec-

Related Weaknesses (CWE)

CWE-320CWE-200

References

FAQ

What is CVE-2018-12438?

CVE-2018-12438 is a vulnerability with a CVSS score of 4.9 (MEDIUM). The Elliptic Curve Cryptography library (aka sunec or libsunec) allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDS...

How severe is CVE-2018-12438?

CVE-2018-12438 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-12438?

Check the references section above for vendor advisories and patch information. Affected products include: Libsunec Project Libsunec.