{"schemaVersion":3,"id":"USN-4267-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"mbedtls vulnerabilities\n\nIt was discovered that mbedtls has a bounds-check bypass through an integer\noverflow that can be used by an attacked to execute arbitrary code or cause a\ndenial of service.\n(CVE-2017-18187)\n\nIt was discovered that mbedtls has a vulnerability where an attacker could\nexecute arbitrary code or cause a denial of service (buffer overflow)\nvia a crafted certificate chain that is mishandled during RSASSA-PSS\nsignature verification within a TLS or DTLS session.\n(CVE-2018-0487)\n\nIt was discovered that mbedtls has a vulnerability where an attacker could\nexecute arbitrary code or cause a denial of service (heap corruption) via a\ncrafted application packet within a TLS or DTLS session.\n(CVE-2018-0488)\n\nIt was discovered that mbedtls has a vulnerability that allows remote\nattackers to achieve partial plaintext recovery (for a CBC based ciphersuite)\nvia a timing-based side-channel attack.\n(CVE-2018-0497)\n\nIt was discovered that mbedtls has a vulnerability that allows local users to\nachieve partial plaintext recovery (for a CBC based ciphersuite) via a\ncache-based side-channel attack.\n(CVE-2018-0498)","dates":{"published":"2020-02-05T12:12:16.000Z","modified":"2026-04-27T15:48:42.654Z","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":"ubuntu","product":"mbedtls","name":"mbedtls","label":"mbedtls","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mbedtls","purlType":"deb","versions":[{"text":"< 2.2.1-2ubuntu0.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.2.1-2ubuntu0.3","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4267-1","label":"ubuntu.com/security/notices/USN-4267-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-18187","label":"ubuntu.com/security/CVE-2017-18187","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-0487","label":"ubuntu.com/security/CVE-2018-0487","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-0488","label":"ubuntu.com/security/CVE-2018-0488","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-0497","label":"ubuntu.com/security/CVE-2018-0497","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-0498","label":"ubuntu.com/security/CVE-2018-0498","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2017-18187","CVE-2018-0487","CVE-2018-0488","CVE-2018-0497","CVE-2018-0498"],"downstream":[],"duplicates":[],"related":["CVE-2017-18187","CVE-2018-0487","CVE-2018-0488","CVE-2018-0497","CVE-2018-0498"]},"timeline":[{"kind":"published","date":"2020-02-05T12:12:16.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T15:48:42.654Z","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":"2026-10-20T15:33:08.016Z","stale":false,"partial":false}}