{"schemaVersion":3,"id":"USN-5259-2","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"cron vulnerabilities\n\nUSN-5259-1 fixed several vulnerabilities in Cron. This update provides\nthe corresponding update for Ubuntu 18.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that the postinst maintainer script in Cron unsafely\n handled file permissions during package install or update operations.\n An attacker could possibly use this issue to perform a privilege\n escalation attack. (CVE-2017-9525)\n\n Florian Weimer discovered that Cron incorrectly handled certain memory\n operations during crontab file creation. An attacker could possibly use\n this issue to cause a denial of service. (CVE-2019-9704)\n\n It was discovered that Cron incorrectly handled user input during crontab\n file creation. An attacker could possibly use this issue to cause a denial\n of service. (CVE-2019-9705)\n\n It was discovered that Cron contained a use-after-free vulnerability in\n its force_rescan_user function. An attacker could possibly use this issue\n to cause a denial of service. (CVE-2019-9706)","dates":{"published":"2022-05-06T08:42:24.000Z","modified":"2026-04-27T16:02:37.477Z","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":"cron","name":"cron","label":"cron","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/cron","purlType":"deb","versions":[{"text":"< 3.0pl1-128.1ubuntu1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.0pl1-128.1ubuntu1.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5259-2","label":"ubuntu.com/security/notices/USN-5259-2","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-9525","label":"ubuntu.com/security/CVE-2017-9525","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-9704","label":"ubuntu.com/security/CVE-2019-9704","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-9705","label":"ubuntu.com/security/CVE-2019-9705","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-9706","label":"ubuntu.com/security/CVE-2019-9706","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2017-9525","CVE-2019-9704","CVE-2019-9705","CVE-2019-9706"],"downstream":[],"duplicates":[],"related":["CVE-2017-9525","CVE-2019-9704","CVE-2019-9705","CVE-2019-9706"]},"timeline":[{"kind":"published","date":"2022-05-06T08:42:24.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T16:02:37.477Z","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":"2026-10-19T06:13:38.542Z","stale":false,"partial":false}}