{"id":"USN-5155-1","summary":"bluez vulnerabilities","details":"It was discovered that BlueZ incorrectly handled the Discoverable status\nwhen a device is powered down. This could result in devices being powered\nup discoverable, contrary to expectations. This issue only affected Ubuntu\n20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)\n\nIt was discovered that BlueZ incorrectly handled certain memory operations.\nA remote attacker could possibly use this issue to cause BlueZ to consume\nresources, leading to a denial of service. (CVE-2021-41229)\n\nIt was discovered that the BlueZ gatt server incorrectly handled\ndisconnects. A remote attacker could possibly use this issue to cause\nBlueZ to crash, leading to a denial of service. (CVE-2021-43400)\n","modified":"2026-04-27T16:03:37.085780658Z","published":"2021-11-23T19:04:05Z","related":["UBUNTU-CVE-2021-3658","UBUNTU-CVE-2021-41229","UBUNTU-CVE-2021-43400"],"upstream":["CVE-2021-3658","CVE-2021-41229","CVE-2021-43400","UBUNTU-CVE-2021-3658","UBUNTU-CVE-2021-41229","UBUNTU-CVE-2021-43400"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5155-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3658"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-41229"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-43400"}],"affected":[{"package":{"name":"bluez","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/bluez@5.48-0ubuntu3.6?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.48-0ubuntu3.6"}]}],"versions":["5.46-0ubuntu3","5.46-0ubuntu4","5.48-0ubuntu3","5.48-0ubuntu3.1","5.48-0ubuntu3.2","5.48-0ubuntu3.3","5.48-0ubuntu3.4","5.48-0ubuntu3.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"5.48-0ubuntu3.6","binary_name":"bluetooth"},{"binary_version":"5.48-0ubuntu3.6","binary_name":"bluez"},{"binary_version":"5.48-0ubuntu3.6","binary_name":"bluez-cups"},{"binary_version":"5.48-0ubuntu3.6","binary_name":"bluez-hcidump"},{"binary_version":"5.48-0ubuntu3.6","binary_name":"bluez-obexd"},{"binary_version":"5.48-0ubuntu3.6","binary_name":"bluez-tests"},{"binary_version":"5.48-0ubuntu3.6","binary_name":"libbluetooth3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2021-41229"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-43400"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5155-1.json"}},{"package":{"name":"bluez","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/bluez@5.53-0ubuntu3.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.53-0ubuntu3.4"}]}],"versions":["5.50-0ubuntu4","5.51-0ubuntu1","5.51-0ubuntu2","5.52-0ubuntu1","5.52-0ubuntu2","5.53-0ubuntu1","5.53-0ubuntu2","5.53-0ubuntu3","5.53-0ubuntu3.1","5.53-0ubuntu3.2","5.53-0ubuntu3.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"5.53-0ubuntu3.4","binary_name":"bluetooth"},{"binary_version":"5.53-0ubuntu3.4","binary_name":"bluez"},{"binary_version":"5.53-0ubuntu3.4","binary_name":"bluez-cups"},{"binary_version":"5.53-0ubuntu3.4","binary_name":"bluez-hcidump"},{"binary_version":"5.53-0ubuntu3.4","binary_name":"bluez-obexd"},{"binary_version":"5.53-0ubuntu3.4","binary_name":"bluez-tests"},{"binary_version":"5.53-0ubuntu3.4","binary_name":"libbluetooth3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2021-3658"},{"severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2021-41229"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-43400"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5155-1.json"}}],"schema_version":"1.7.5"}