{"schemaVersion":3,"id":"CVE-2018-12370","aliases":["UBUNTU-CVE-2018-12370"],"status":"published","duplicateOf":null,"title":null,"description":"In Reader View SameSite cookie protections are not checked on exiting. This allows for a payload to be triggered when Reader View is exited if loaded by a malicious site while Reader mode is active, bypassing CSRF protections. This vulnerability affects Firefox < 61.","dates":{"published":"2018-10-18T13:00:00.000Z","modified":"2024-08-05T08:30:59.694Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6.8,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":8.8,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true}]},"epss":{"probability":0.01126,"percentile":0.65793,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01126},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01126,"percentile":0.65793}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01133,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01126,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01126,"percentile":0.65793}]},"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":[{"id":"CWE-352","name":"Cross-Site Request Forgery (CSRF)","description":"The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.","type":"weakness","status":"Stable","abstraction":"Compound","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/352.html"}],"affected":[{"vendor":"canonical","product":"ubuntu_linux","name":"ubuntu linux","label":"ubuntu_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"14.04","noFixRecorded":false,"fixedIn":null},{"text":"16.04","noFixRecorded":false,"fixedIn":null},{"text":"17.10","noFixRecorded":false,"fixedIn":null},{"text":"18.04","noFixRecorded":false,"fixedIn":null}],"versionsText":"14.04 | 16.04 | 17.10 | 18.04","eol":{"isEol":true,"eolDate":"2019-04-02T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"14.04","label":"14.04 'Trusty Tahr' (LTS)","eolFrom":"2019-04-02T00:00:00.000Z","isLts":true,"isMaintained":false,"latestVersion":"14.04.6"},"product":{"name":"ubuntu","label":"Ubuntu","category":"os"}},"hubHref":"/vendor/canonical/ubuntu_linux"},{"vendor":"ubuntu","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/firefox","purlType":"deb","versions":[{"text":"< 61.0+build3-0ubuntu0.14.04.2","noFixRecorded":false,"fixedIn":null},{"text":"< 61.0+build3-0ubuntu0.16.04.2","noFixRecorded":false,"fixedIn":null},{"text":"< 61.0+build3-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 61.0+build3-0ubuntu0.14.04.2 | < 61.0+build3-0ubuntu0.16.04.2 | < 61.0+build3-0ubuntu0.18.04.1","eol":null,"hubHref":null},{"vendor":"mozilla","product":"firefox","name":"Firefox","label":"firefox","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 61","noFixRecorded":false,"fixedIn":null},{"text":"< 61.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 61 | < 61.0","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"firefox","label":"Firefox","category":"app"}},"hubHref":"/vendor/mozilla/firefox"}],"affectedCount":3,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://security.gentoo.org/glsa/201810-01","label":"security.gentoo.org/glsa/201810-01","hostname":"security.gentoo.org","tags":["Vendor Advisory","X Refsource GENTOO","Third Party Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2018-15/","label":"www.mozilla.org/security/advisories/mfsa2018-15/","hostname":"www.mozilla.org","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1456652","label":"bugzilla.mozilla.org/show_bug.cgi?id=1456652","hostname":"bugzilla.mozilla.org","tags":["X Refsource CONFIRM","Issue Tracking","Patch","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1041193","label":"www.securitytracker.com/id/1041193","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK","Third Party Advisory"]},{"url":"https://usn.ubuntu.com/3705-1/","label":"usn.ubuntu.com/3705-1/","hostname":"usn.ubuntu.com","tags":["Vendor Advisory","X Refsource UBUNTU","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-12370","label":"ubuntu.com/security/CVE-2018-12370","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2018-15/#CVE-2018-12370","label":"www.mozilla.org/en-US/security/advisories/mfsa2018-15/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-3705-1","label":"ubuntu.com/security/notices/USN-3705-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-12370","label":"www.cve.org/CVERecord?id=CVE-2018-12370","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2024:10600-1","OPENSUSE-SU-2024:14572-1","USN-3705-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:10600-1","OPENSUSE-SU-2024:14572-1","USN-3705-1"]},"timeline":[{"kind":"published","date":"2018-10-18T13:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T08:30:59.694Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:48:04.304Z","stale":false,"partial":false}}