{"id":"USN-3276-2","aliases":[],"status":"published","title":"shadow regression","description":"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)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2017-05-17T01:55:06Z","modified":"2026-02-10T04:41:07Z","fixes":[{"ecosystem":"Ubuntu:14.04:LTS","package":"shadow","fixed_in":["1:4.1.5.1-1ubuntu9.5"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"shadow","fixed_in":["1:4.2-3.1ubuntu5.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"shadow","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"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"shadow","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"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-3276-2","tags":["advisory"]},{"url":"https://launchpad.net/bugs/1690820","tags":["report"]}],"sources":{"osv":[{"id":"USN-3276-2","title":"shadow regression","description":"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","status":"published","published":"2017-05-17T01:55:06Z","modified":"2026-02-10T04:41:07Z","updated_at":"2026-11-02T16:58:13.496563Z"}]}}