DebianCVELIST:CVE-2018-0495CVE-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.
CNA Affected
[
{
"product": "Libgcrypt before 1.7.10 and 1.8.x before 1.8.3",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Libgcrypt before 1.7.10 and 1.8.x before 1.8.3"
}
]
}
]References
www.securitytracker.com/id/1041144
www.securitytracker.com/id/1041147
access.redhat.com/errata/RHSA-2018:3221
access.redhat.com/errata/RHSA-2018:3505
access.redhat.com/errata/RHSA-2019:1296
access.redhat.com/errata/RHSA-2019:1297
access.redhat.com/errata/RHSA-2019:1543
access.redhat.com/errata/RHSA-2019:2237
dev.gnupg.org/T4011
git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965
lists.debian.org/debian-lts-announce/2018/06/msg00013.html
lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
usn.ubuntu.com/3689-1/
usn.ubuntu.com/3689-2/
usn.ubuntu.com/3692-1/
usn.ubuntu.com/3692-2/
usn.ubuntu.com/3850-1/
usn.ubuntu.com/3850-2/
www.debian.org/security/2018/dsa-4231
www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
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