{"id":"MGASA-2021-0563","summary":"Updated botan2 packages fix security vulnerability","details":"Updated botan2 packages fix security vulnerability:\n\nThe ElGamal implementation in Botan through 2.18.1, as used in Thunderbird\nand other products, allows plaintext recovery because, during interaction\nbetween two cryptographic libraries, a certain dangerous combination of the\nprime defined by the receiver's public key, the generator defined by the\nreceiver's public key, and the sender's ephemeral exponents can lead to a\ncross-configuration attack against OpenPGP (CVE-2021-40529).\n","modified":"2026-04-16T04:40:57.470839525Z","published":"2021-12-19T12:26:08Z","upstream":["CVE-2021-40529"],"references":[{"type":"ADVISORY","url":"https://advisories.mageia.org/MGASA-2021-0563.html"},{"type":"REPORT","url":"https://bugs.mageia.org/show_bug.cgi?id=29659"}],"affected":[{"package":{"name":"botan2","ecosystem":"Mageia:8","purl":"pkg:rpm/mageia/botan2?arch=source&distro=mageia-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.17.3-2.1.mga8"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2021-0563.json"}}],"schema_version":"1.7.5","credits":[{"name":"Mageia","contact":["https://wiki.mageia.org/en/Packages_Security_Team"],"type":"COORDINATOR"}]}