CVE-2018-0495

CVE Details

Release Date:	2018-06-13
Impact:	Moderate	What is this?

Description

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, 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.

See more information about CVE-2018-0495 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	4.7
Vector String:	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Version:	3.0
Attack Vector:	Local
Attack Complexity:	High
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (nspr)	ELSA-2019-2237	2019-08-13
Oracle Linux version 7 (nss)	ELSA-2019-2237	2019-08-13
Oracle Linux version 7 (nss-softokn)	ELSA-2019-2237	2019-08-13
Oracle Linux version 7 (nss-util)	ELSA-2019-2237	2019-08-13
Oracle Linux version 7 (openssl)	ELSA-2018-3221	2018-11-05