{"id":"USN-5292-3","summary":"snapd vulnerabilities","details":"USN-5292-1 fixed several vulnerabilities in snapd. This update provides the\ncorresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n James Troup discovered that snap did not properly manage the permissions for\n the snap directories. A local attacker could possibly use this issue to expose\n sensitive information. (CVE-2021-3155)\n \n Ian Johnson discovered that snapd did not properly validate content interfaces\n and layout paths. A local attacker could possibly use this issue to inject\n arbitrary AppArmor policy rules, resulting in a bypass of intended access\n restrictions. (CVE-2021-4120)\n \n The Qualys Research Team discovered that snapd did not properly validate the\n location of the snap-confine binary. A local attacker could possibly use this\n issue to execute other arbitrary binaries and escalate privileges.\n (CVE-2021-44730)\n \n The Qualys Research Team discovered that a race condition existed in the snapd\n snap-confine binary when preparing a private mount namespace for a snap. A\n local attacker could possibly use this issue to escalate privileges and\n execute arbitrary code. (CVE-2021-44731)\n","modified":"2026-02-10T04:42:29Z","published":"2022-02-18T02:21:20Z","related":["UBUNTU-CVE-2021-3155","UBUNTU-CVE-2021-4120","UBUNTU-CVE-2021-44730","UBUNTU-CVE-2021-44731"],"upstream":["CVE-2021-3155","CVE-2021-4120","CVE-2021-44730","CVE-2021-44731","UBUNTU-CVE-2021-3155","UBUNTU-CVE-2021-4120","UBUNTU-CVE-2021-44730","UBUNTU-CVE-2021-44731"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5292-3"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3155"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4120"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-44730"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-44731"}],"affected":[{"package":{"name":"snapd","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/snapd@2.54.3+14.04~esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.54.3+14.04~esm1"}]}],"versions":["2.21~14.04.2","2.22.2~14.04","2.22.3~14.04","2.22.6~14.04","2.23.1~14.04","2.24.1~14.04","2.25~14.04","2.26.10~14.04","2.27.5~14.04","2.28.5~14.04","2.29.4.2~14.04","2.32.3.2~14.04","2.32.9~14.04","2.33.1~14.04","2.34.2~14.04","2.34.2~14.04.1","2.37.4~14.04.1","2.38~14.04"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"golang-github-snapcore-snapd-dev","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"golang-github-ubuntu-core-snappy-dev","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"snap-confine","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"snapd","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"snapd-xdg-open","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"ubuntu-core-launcher","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"ubuntu-core-snapd-units","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"ubuntu-snappy","binary_version":"2.54.3+14.04~esm1"},{"binary_name":"ubuntu-snappy-cli","binary_version":"2.54.3+14.04~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5292-3.json","cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-4120"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2021-44730"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2021-44731"}]}}},{"package":{"name":"snapd","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/snapd@2.54.3+16.04~esm2?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.54.3+16.04~esm2"}]}],"versions":["1.9","1.9.1.1","1.9.2","2.0","2.0.1","2.0.2","2.0.3","2.0.5","2.0.8","2.0.9","2.0.10","2.11+0.16.04","2.12+0.16.04","2.13","2.14.2~16.04","2.15.2ubuntu1","2.16ubuntu3","2.17.1ubuntu1","2.20.1ubuntu1","2.21","2.22.2","2.22.3","2.22.6","2.23.1","2.24.1","2.25","2.26.10","2.27.5","2.28.5","2.29.4.2","2.32.3.2","2.32.9","2.33.1ubuntu2","2.34.2","2.34.2ubuntu0.1","2.37.4","2.37.4ubuntu0.1","2.38","2.39.2","2.39.2ubuntu0.2","2.40","2.42.1","2.45.1","2.45.1ubuntu0.2","2.46.1","2.47.1","2.48","2.48.3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"golang-github-snapcore-snapd-dev","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"golang-github-ubuntu-core-snappy-dev","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"snap-confine","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"snapd","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"snapd-xdg-open","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"ubuntu-core-launcher","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"ubuntu-core-snapd-units","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"ubuntu-snappy","binary_version":"2.54.3+16.04~esm2"},{"binary_name":"ubuntu-snappy-cli","binary_version":"2.54.3+16.04~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5292-3.json","cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-3155"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-4120"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2021-44730"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2021-44731"}]}}}],"schema_version":"1.7.3"}