{"schema_version":"1.7.3","id":"ALSA-2021:4409","published":"2021-11-09T09:18:49Z","modified":"2026-02-04T03:49:06.942909Z","related":["CVE-2021-33560"],"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 AlmaLinux Release Notes linked from the References section.","affected":[{"package":{"name":"libgcrypt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/libgcrypt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.5-6.el8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2021:4409.json"}},{"package":{"name":"libgcrypt-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/libgcrypt-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.5-6.el8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2021:4409.json"}}],"references":[{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2021-4409.html"},{"type":"REPORT","url":"https://vulners.com/cve/CVE-2021-33560"}]}