NetSight
IP …
medium4.7

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 …

Impact

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.

Affected products

VendorProductAffected versions
GnupgLibgcrypt
before 1.7.10
from 1.8.0 before 1.8.3
CanonicalUbuntu Linux
Versions 12.04, 14.04, 16.04, 17.10, 18.04, 18.10
DebianDebian Linux
Versions 8.0, 9.0
RedhatAnsible Tower
Version 3.3
RedhatEnterprise Linux Desktop
Version 7.0
RedhatEnterprise Linux Server
Version 7.0
RedhatEnterprise Linux Workstation
Version 7.0
OracleTraffic Director
Version 11.1.1.9.0

Weakness classification

CWE-203

References