CVE Vulnerability

CVE-2018-12434

LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

1.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

4.7 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/ Third Party Advisory
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.4-relnotes.txt Vendor Advisory
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.6.5-relnotes.txt Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:openbsd:libressl:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:openbsd:libressl:2.7.3:*:*:*:*:*:*:*
cpe:2.3:a:openbsd:libressl:2.7.2:*:*:*:*:*:*:*
cpe:2.3:a:openbsd:libressl:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:openbsd:libressl:*:*:*:*:*:*:*:*
Information

Published : 2018-06-15 02:29

Updated : 2018-08-06 04:54

NVD link : CVE-2018-12434

Mitre link : CVE-2018-12434

Products Affected

Libressl

Openbsd

CWE
CWE-200