CVE-2018-0495

MEDIUM

Gnupg Libgcrypt < 1.7.10 - Information Disclosure

Title source: rule

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.

Exploits (2)

github WORKING POC 1 stars
by vaishakhcv · perlpoc
https://github.com/vaishakhcv/CVE-exploits/tree/master/CVE-2018-0495
github WORKING POC
by winterwolf32 · perlpoc
https://github.com/winterwolf32/CVE_Exploits-/tree/master/CVE-2018-0495

References (21)

... and 1 more

Scores

CVSS v3 4.7
EPSS 0.0025
EPSS Percentile 48.2%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Classification

CWE
CWE-203
Status published

Affected Products (14)

gnupg/libgcrypt < 1.7.10
canonical/ubuntu_linux
canonical/ubuntu_linux
canonical/ubuntu_linux
canonical/ubuntu_linux
canonical/ubuntu_linux
canonical/ubuntu_linux
debian/debian_linux
debian/debian_linux
redhat/ansible_tower
redhat/enterprise_linux_desktop
redhat/enterprise_linux_server
redhat/enterprise_linux_workstation
oracle/traffic_director

Timeline

Published Jun 13, 2018
Tracked Since Feb 18, 2026