{"schemaVersion":3,"id":"CVE-2019-9810","aliases":["UBUNTU-CVE-2019-9810","DEBIAN-CVE-2019-9810"],"status":"published","duplicateOf":null,"title":null,"description":"Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.","dates":{"published":"2019-04-26T16:10:13.000Z","modified":"2024-08-04T22:01:54.913Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"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},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/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}]},"epss":{"probability":0.29729,"percentile":0.98188,"severity":"high","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.29729},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.29514,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.29514,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.29514,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.29514,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.29729,"percentile":0.98188}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.29729,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.29729,"percentile":0.98188}]},"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":[{"id":"REF_DAF7CF72B30340BA","name":"Exploit Reference (bugzilla.mozilla.org)","source":"reference","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1537924","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"REF_12AD2B099659424B","name":"Exploit Reference (packetstormsecurity.com)","source":"reference","url":"http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"46605","name":"Firefox < 66.0.1 - 'Array.prototype.slice' Buffer Overflow","source":"exploit-database","url":"https://www.exploit-db.com/exploits/46605","maturity":"poc","reliabilityScore":0.5,"verified":false,"type":"dos","platforms":["multiple"],"requiresAuth":null,"exploitdb":{"verified":false,"type":"dos","platform":"multiple","file":"exploits/multiple/dos/46605.html","codes":["CVE-2019-9810"]},"metasploit":null},{"id":"47752","name":"Mozilla FireFox (Windows 10 x64) - Full Chain Client Side Attack","source":"exploit-database","url":"https://www.exploit-db.com/exploits/47752","maturity":"poc","reliabilityScore":0.5,"verified":false,"type":"local","platforms":["windows_x86-64"],"requiresAuth":null,"exploitdb":{"verified":false,"type":"local","platform":"windows_x86-64","file":"exploits/windows_x86-64/local/47752.js","codes":["CVE-2019-9810","CVE-2019-11708"]},"metasploit":null}],"exploitCount":4,"weaknesses":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer","description":"The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/119.html"}],"affected":[{"vendor":"debian","product":"firefox-esr","name":"firefox-esr","label":"firefox-esr","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/firefox-esr","purlType":"deb","versions":[{"text":"< 60.6.1esr-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 60.6.1esr-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/firefox","purlType":"deb","versions":[{"text":"< 66.0.1+build1-0ubuntu0.14.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 66.0.1+build1-0ubuntu0.16.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 66.0.1+build1-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 66.0.1+build1-0ubuntu0.14.04.1 | < 66.0.1+build1-0ubuntu0.16.04.1 | < 66.0.1+build1-0ubuntu0.18.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs38","name":"mozjs38","label":"mozjs38","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs38","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs52","name":"mozjs52","label":"mozjs52","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs52","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/thunderbird","purlType":"deb","versions":[{"text":"< 1:60.6.1+build2-0ubuntu0.14.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:60.6.1+build2-0ubuntu0.16.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:60.6.1+build2-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:60.6.1+build2-0ubuntu0.14.04.1 | < 1:60.6.1+build2-0ubuntu0.16.04.1 | < 1:60.6.1+build2-0ubuntu0.18.04.1","eol":null,"hubHref":null},{"vendor":"mozilla","product":"firefox","name":"Firefox","label":"firefox","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 66.0.1","noFixRecorded":false,"fixedIn":null},{"text":"< 60.6.1","noFixRecorded":false,"fixedIn":null},{"text":"< 66.0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 66.0.1 | < 60.6.1 | < 66.0.1","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"firefox","label":"Firefox","category":"app"}},"hubHref":"/vendor/mozilla/firefox"},{"vendor":"mozilla","product":"firefox_esr","name":"firefox esr","label":"firefox_esr","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 60.6.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 60.6.1","eol":null,"hubHref":"/vendor/mozilla/firefox_esr"},{"vendor":"mozilla","product":"thunderbird","name":"Thunderbird","label":"thunderbird","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 60.6.1","noFixRecorded":false,"fixedIn":null},{"text":"< 60.6.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 60.6.1 | < 60.6.1","eol":null,"hubHref":"/vendor/mozilla/thunderbird"},{"vendor":"redhat","product":"enterprise_linux","name":"enterprise linux","label":"enterprise_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"8.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"8.0","eol":{"isEol":false,"eolDate":"2029-05-31T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"8","label":"8 (Upcoming ELS)","eolFrom":"2029-05-31T00:00:00.000Z","isLts":false,"isMaintained":true,"latestVersion":"8.10"},"product":{"name":"rhel","label":"Red Hat Enterprise Linux","category":"os"}},"hubHref":"/vendor/redhat/enterprise_linux"},{"vendor":"redhat","product":"enterprise_linux_eus","name":"enterprise linux eus","label":"enterprise_linux_eus","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"8.1","noFixRecorded":false,"fixedIn":null},{"text":"8.2","noFixRecorded":false,"fixedIn":null},{"text":"8.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"8.1 | 8.2 | 8.4","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_eus"},{"vendor":"redhat","product":"enterprise_linux_server_aus","name":"enterprise linux server aus","label":"enterprise_linux_server_aus","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"8.2","noFixRecorded":false,"fixedIn":null},{"text":"8.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"8.2 | 8.4","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_server_aus"},{"vendor":"redhat","product":"enterprise_linux_server_tus","name":"enterprise linux server tus","label":"enterprise_linux_server_tus","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"8.2","noFixRecorded":false,"fixedIn":null},{"text":"8.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"8.2 | 8.4","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_server_tus"}],"affectedCount":12,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2019-09/","label":"www.mozilla.org/security/advisories/mfsa2019-09/","hostname":"www.mozilla.org","tags":["X Refsource MISC","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-10/","label":"www.mozilla.org/security/advisories/mfsa2019-10/","hostname":"www.mozilla.org","tags":["X Refsource MISC","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2019-12/","label":"www.mozilla.org/security/advisories/mfsa2019-12/","hostname":"www.mozilla.org","tags":["X Refsource MISC","Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1537924","label":"bugzilla.mozilla.org/show_bug.cgi?id=1537924","hostname":"bugzilla.mozilla.org","tags":["X Refsource MISC","Exploit","Issue Tracking","Vendor Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2019:0966","label":"access.redhat.com/errata/RHSA-2019:0966","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Third Party Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2019:1144","label":"access.redhat.com/errata/RHSA-2019:1144","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html","label":"packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html","hostname":"packetstormsecurity.com","tags":["X Refsource MISC","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://ubuntu.com/security/CVE-2019-9810","label":"ubuntu.com/security/CVE-2019-9810","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-09/#CVE-2019-9810","label":"www.mozilla.org/en-US/security/advisories/mfsa2019-09/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-12/#CVE-2019-9810","label":"www.mozilla.org/en-US/security/advisories/mfsa2019-12/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-3919-1","label":"ubuntu.com/security/notices/USN-3919-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-3927-1","label":"ubuntu.com/security/notices/USN-3927-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-9810","label":"www.cve.org/CVERecord?id=CVE-2019-9810","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-9810","label":"security-tracker.debian.org/tracker/CVE-2019-9810","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DLA-1727-1","DSA-4417-1","MGASA-2019-0129","MGASA-2019-0131","OPENSUSE-SU-2019:1077-1","OPENSUSE-SU-2019:1126-1","OPENSUSE-SU-2019:1162-1","OPENSUSE-SU-2024:10600-1","OPENSUSE-SU-2024:10601-1","OPENSUSE-SU-2024:14572-1","RHSA-2019:0671","RHSA-2019:0672","RHSA-2019:0680","RHSA-2019:0681","RHSA-2019:0966","RHSA-2019:1144","SUSE-SU-2019:0852-1","SUSE-SU-2019:0853-1","SUSE-SU-2019:0871-1","USN-3919-1","USN-3927-1"],"duplicates":[],"related":["OPENSUSE-SU-2019:1077-1","OPENSUSE-SU-2019:1126-1","OPENSUSE-SU-2019:1162-1","OPENSUSE-SU-2024:10600-1","OPENSUSE-SU-2024:10601-1","OPENSUSE-SU-2024:14572-1","SUSE-SU-2019:0852-1","SUSE-SU-2019:0853-1","SUSE-SU-2019:0871-1","USN-3919-1","USN-3927-1"]},"timeline":[{"kind":"published","date":"2019-04-26T16:10:13.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T22:01:54.913Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":51,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T21:43:40.316Z","stale":false,"partial":false}}