{"id":"USN-5259-2","summary":"cron vulnerabilities","details":"USN-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)\n","modified":"2026-04-27T16:02:37.477570Z","published":"2022-05-06T08:42:24Z","related":["UBUNTU-CVE-2017-9525","UBUNTU-CVE-2019-9704","UBUNTU-CVE-2019-9705","UBUNTU-CVE-2019-9706"],"upstream":["CVE-2017-9525","CVE-2019-9704","CVE-2019-9705","CVE-2019-9706","UBUNTU-CVE-2017-9525","UBUNTU-CVE-2019-9704","UBUNTU-CVE-2019-9705","UBUNTU-CVE-2019-9706"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5259-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-9525"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-9704"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-9705"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-9706"}],"affected":[{"package":{"name":"cron","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/cron@3.0pl1-128.1ubuntu1.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0pl1-128.1ubuntu1.1"}]}],"versions":["3.0pl1-128ubuntu5","3.0pl1-128.1ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"cron","binary_version":"3.0pl1-128.1ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5259-2.json","cves_map":{"cves":[{"id":"CVE-2019-9704","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2019-9705","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2019-9706"}],"ecosystem":"Ubuntu:18.04:LTS"}}}],"schema_version":"1.7.5"}