{"id":"USN-3276-2","summary":"shadow regression","details":"USN-3276-1 intended to fix a vulnerability in su. The solution introduced\na regression in su signal handling. This update modifies the security fix.\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Sebastian Krahmer discovered integer overflows in shadow utilities.\n A local attacker could possibly cause them to crash or potentially\n gain privileges via crafted input. (CVE-2016-6252)\n\n Tobias Stöckmann discovered a race condition in su. A local\n attacker could cause su to send SIGKILL to other processes with\n root privileges. (CVE-2017-2616)\n","modified":"2026-02-10T04:41:07Z","published":"2017-05-17T01:55:06Z","references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3276-2"},{"type":"REPORT","url":"https://launchpad.net/bugs/1690820"}],"affected":[{"package":{"name":"shadow","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/shadow@1:4.1.5.1-1ubuntu9.5?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1.5.1-1ubuntu9.5"}]}],"versions":["1:4.1.5.1-1ubuntu6","1:4.1.5.1-1ubuntu7","1:4.1.5.1-1ubuntu8","1:4.1.5.1-1ubuntu9","1:4.1.5.1-1ubuntu9.1","1:4.1.5.1-1ubuntu9.2","1:4.1.5.1-1ubuntu9.4"],"ecosystem_specific":{"binaries":[{"binary_name":"login","binary_version":"1:4.1.5.1-1ubuntu9.5"},{"binary_name":"passwd","binary_version":"1:4.1.5.1-1ubuntu9.5"},{"binary_name":"uidmap","binary_version":"1:4.1.5.1-1ubuntu9.5"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:14.04:LTS","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3276-2.json"}},{"package":{"name":"shadow","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/shadow@1:4.2-3.1ubuntu5.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2-3.1ubuntu5.3"}]}],"versions":["1:4.1.5.1-1.1ubuntu7","1:4.2-3.1ubuntu1","1:4.2-3.1ubuntu2","1:4.2-3.1ubuntu3","1:4.2-3.1ubuntu4","1:4.2-3.1ubuntu5","1:4.2-3.1ubuntu5.2"],"ecosystem_specific":{"binaries":[{"binary_name":"login","binary_version":"1:4.2-3.1ubuntu5.3"},{"binary_name":"passwd","binary_version":"1:4.2-3.1ubuntu5.3"},{"binary_name":"uidmap","binary_version":"1:4.2-3.1ubuntu5.3"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3276-2.json"}}],"schema_version":"1.7.3"}