{"id":"RLSA-2021:4409","summary":"Moderate: libgcrypt security and bug fix update","details":"The libgcrypt library provides general-purpose implementations of various cryptographic algorithms.\n\nSecurity Fix(es):\n\n* libgcrypt: mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm (CVE-2021-33560)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.","modified":"2026-02-04T18:00:05.664767Z","published":"2021-11-09T09:18:49Z","upstream":["CVE-2021-33560"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:4409"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1970096"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1976137"}],"affected":[{"package":{"name":"libgcrypt","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/libgcrypt?distro=rocky-linux-8-5-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.8.5-6.el8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4409.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}