{"id":"CVE-2017-9526","details":"In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.","modified":"2026-03-20T11:22:19.173681Z","published":"2017-06-11T02:29:00.183Z","related":["SUSE-SU-2017:1608-1"],"references":[{"type":"WEB","url":"https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=5a22de904a0a366ae79f03ff1e13a1232a89e26b"},{"type":"WEB","url":"https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=f9494b3f258e01b6af8bd3941ce436bcc00afc56"},{"type":"ADVISORY","url":"https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"},{"type":"ADVISORY","url":"http://www.debian.org/security/2017/dsa-3880"},{"type":"ADVISORY","url":"http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/99046"},{"type":"FIX","url":"https://bugzilla.suse.com/show_bug.cgi?id=1042326"}],"affected":[{"ranges":[{"type":"GIT","repo":"git://git.gnupg.org/libgcrypt.git","events":[{"introduced":"0"},{"last_affected":"64e4808c05894b623f06c526a37ae2b77c31e36d"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.7.6"}]}}],"versions":["DEVEL-BRANCH-1-1","V-0-2-8","V0-0-0","V0-1-0","V0-2-0","V0-2-10","V0-2-15","V0-2-17","V0-2-18","V0-2-19","V0-2-6","V0-3-0","V0-3-1","V0-3-2","V0-3-3","V0-3-4","V0-3-5","V0-4-0","V0-4-1","V0-4-2","V0-4-3","V0-4-4","V0-4-5","V0-9-0","V0-9-1","V0-9-10","V0-9-11","V0-9-2","V0-9-3","V0-9-4","V0-9-5","V0-9-6","V0-9-7","V0-9-8","V0-9-9","V1-0-0","V1-0-1","V1-0-1-ePit-1","V1-0-2","V1-0-3","V1-0-4","V1-1-0","V1-1-10","V1-1-11","V1-1-12","V1-1-2","V1-1-3","V1-1-4","V1-1-42","V1-1-43","V1-1-44","V1-1-5","V1-1-6","V1-1-7","V1-1-8","V1-1-9","V1-1-90","V1-1-91","V1-1-92","V1-1-93","V1-1-94","V1-2-0","V1-2-1","ecc-integration-done","last-gpl-version","libgcrypt-1.3.0","libgcrypt-1.3.1","libgcrypt-1.3.2","libgcrypt-1.4.0","libgcrypt-1.4.1","libgcrypt-1.4.1rc1","libgcrypt-1.4.2","libgcrypt-1.4.2rc1","libgcrypt-1.4.2rc2","libgcrypt-1.4.3","libgcrypt-1.4.4","libgcrypt-1.5.0","libgcrypt-1.5.0-beta1","libgcrypt-1.6.0","libgcrypt-1.7.0","libgcrypt-1.7.1","libgcrypt-1.7.2","libgcrypt-1.7.3","libgcrypt-1.7.4","libgcrypt-1.7.5","libgcrypt-1.7.6","marcus-after-thread-cbs","marcus-before-thread-cbs","now-less-freedom-protected","post-nuke-of-trailing-ws"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-9526.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}