{"schemaVersion":3,"id":"MGASA-2021-0300","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated nettle packages fix security vulnerabilities\n\nRemote crash in RSA decryption via manipulated ciphertext (CVE-2021-3580).\n\nA flaw was found in Nettle in versions before 3.7.2, where several Nettle\nsignature verification functions (GOST DSA, EDDSA & ECDSA) result in the\nElliptic Curve Cryptography point (ECC) multiply function being called with\nout-of-range scalers, possibly resulting in incorrect results. This flaw\nallows an attacker to force an invalid signature, causing an assertion\nfailure or possible validation (CVE-2021-20305).\n\nThe Mageia 8 nettle package has been updated to version 3.7.3 and the Mageia 7\nnettle package has been patched to fix these issues.","dates":{"published":"2021-06-29T17:31:40.000Z","modified":"2026-04-16T04:43:28.495Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"nettle","name":"nettle","label":"nettle","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/nettle","purlType":"rpm","versions":[{"text":"< 3.4.1-1.1.mga7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.4.1-1.1.mga7","eol":null,"hubHref":null},{"vendor":"mageia","product":"nettle","name":"nettle","label":"nettle","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/nettle","purlType":"rpm","versions":[{"text":"< 3.7.3-1.mga8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.7.3-1.mga8","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2021-0300.html","label":"advisories.mageia.org/MGASA-2021-0300.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=28800","label":"bugs.mageia.org/show_bug.cgi?id=28800","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://lists.lysator.liu.se/pipermail/nettle-bugs/2021/009458.html","label":"lists.lysator.liu.se/pipermail/nettle-bugs/2021/009458.html","hostname":"lists.lysator.liu.se","tags":["WEB"]},{"url":"https://lists.lysator.liu.se/pipermail/nettle-bugs/2021/009545.html","label":"lists.lysator.liu.se/pipermail/nettle-bugs/2021/009545.html","hostname":"lists.lysator.liu.se","tags":["WEB"]},{"url":"https://ubuntu.com/security/notices/USN-4906-1","label":"ubuntu.com/security/notices/USN-4906-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-4990-1","label":"ubuntu.com/security/notices/USN-4990-1","hostname":"ubuntu.com","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2021-20305","CVE-2021-3580"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-06-29T17:31:40.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T04:43:28.495Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T19:56:33.317Z","stale":false,"partial":false}}