{"id":"CVE-2018-0495","revision":"8b19703dafaa44628cbe5e840370f847","records":[{"revision":"8b19703dafaa44628cbe5e840370f847","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2018-0495","aliases":[],"title":"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-ecd…","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.","state":0,"publishedAt":"2018-06-13T23:00:00+00:00","modifiedAt":"2026-10-14T06:30:32.757+00:00","affected":[{"ecosystem":"Vendor product","name":"Libgcrypt before 1.7.10 and 1.8.x before 1.8.3","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Libgcrypt before 1.7.10 and 1.8.x before 1.8.3\",\n                    \"vendor\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"Libgcrypt before 1.7.10 and 1.8.x before 1.8.3\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965","http://www.securitytracker.com/id/1041144","https://usn.ubuntu.com/3850-1/","http://www.securitytracker.com/id/1041147","https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/","https://usn.ubuntu.com/3689-1/","https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html","https://usn.ubuntu.com/3689-2/","https://usn.ubuntu.com/3692-2/","https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html","https://www.debian.org/security/2018/dsa-4231","https://access.redhat.com/errata/RHSA-2018:3505","https://usn.ubuntu.com/3850-2/","https://usn.ubuntu.com/3692-1/","https://access.redhat.com/errata/RHSA-2018:3221","https://dev.gnupg.org/T4011","https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2018-0495","license":"CVE Program Terms of Use","key":"cve-program:CVE-2018-0495","identifiers":["CVE-2018-0495"]},"retained":false,"historicalAffected":[]}],"coverage":[]}