{"schemaVersion":3,"id":"USN-5292-3","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"snapd vulnerabilities\n\nUSN-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)","dates":{"published":"2022-02-18T02:21:20.000Z","modified":"2026-06-29T13:49:35.695Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"snapd","name":"snapd","label":"snapd","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/snapd","purlType":"deb","versions":[{"text":"< 2.54.3+14.04~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 2.54.3+16.04~esm2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.54.3+14.04~esm1 | < 2.54.3+16.04~esm2","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5292-3","label":"ubuntu.com/security/notices/USN-5292-3","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-3155","label":"ubuntu.com/security/CVE-2021-3155","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-4120","label":"ubuntu.com/security/CVE-2021-4120","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-44730","label":"ubuntu.com/security/CVE-2021-44730","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-44731","label":"ubuntu.com/security/CVE-2021-44731","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-3155","CVE-2021-4120","CVE-2021-44730","CVE-2021-44731"],"downstream":[],"duplicates":[],"related":["CVE-2021-3155","CVE-2021-4120","CVE-2021-44730","CVE-2021-44731"]},"timeline":[{"kind":"published","date":"2022-02-18T02:21:20.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-29T13:49:35.695Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T13:23:45.618Z","stale":false,"partial":false}}