CVE Vulnerability

CVE-2018-0495

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.

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/ Exploit Third Party Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html Vendor Advisory
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=9010d1576e278a4274ad3f4aa15776c28f6ba965 Patch Vendor Advisory
https://dev.gnupg.org/T4011 Patch Vendor Advisory
https://www.debian.org/security/2018/dsa-4231 Third Party Advisory
https://usn.ubuntu.com/3689-2/ Third Party Advisory
https://usn.ubuntu.com/3689-1/ Third Party Advisory
http://www.securitytracker.com/id/1041147 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1041144 Third Party Advisory VDB Entry
https://usn.ubuntu.com/3692-2/ Third Party Advisory
https://usn.ubuntu.com/3692-1/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3221 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3505 Third Party Advisory
https://usn.ubuntu.com/3850-1/ Third Party Advisory
https://usn.ubuntu.com/3850-2/ Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1297
https://access.redhat.com/errata/RHSA-2019:1296
https://access.redhat.com/errata/RHSA-2019:1543
https://access.redhat.com/errata/RHSA-2019:2237
Configurations

Configuration 1

cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*
cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:ansible_tower:3.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:traffic_director:11.1.1.9.0:*:*:*:*:*:*:*
Information

Published : 2018-06-13 11:29

Updated : 2020-08-24 05:37

NVD link : CVE-2018-0495

Mitre link : CVE-2018-0495

Products Affected
No products.
CWE
CWE-203