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We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1."}, {"lang": "es", "value": "Una informaci\u00f3n de alias incorrecta en compilador IonMonkey JIT para establecer los elementos de la matriz podr\u00eda conllevar a una confusi\u00f3n de tipo. Estamos conscientes de los ataques dirigidos \"in the wild\" abusando de este fallo. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 68.4.1, Thunderbird versiones anteriores a 68.4.1, y Firefox versiones anteriores a 72.0.1."}], "id": "CVE-2019-17026", "lastModified": "2025-10-22T00:16:36.960", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2020-03-02T05:15:12.010", "references": [{"source": "security@mozilla.org", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html"}, {"source": "security@mozilla.org", "tags": ["Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1607443"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202003-02"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4335-1/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-03/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-04/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1607443"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202003-02"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4335-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-03/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-04/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-17026"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-843"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-843"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Qihoo 360 ATA as the original reporter.", "affected_release": [{"advisory": "RHSA-2020:0086", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "firefox-0:68.4.1-1.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-01-13T00:00:00Z"}, {"advisory": "RHSA-2020:0123", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "thunderbird-0:68.4.1-2.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-01-16T00:00:00Z"}, {"advisory": "RHSA-2020:0085", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:68.4.1-1.el7_7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-01-13T00:00:00Z"}, {"advisory": "RHSA-2020:0120", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:68.4.1-2.el7_7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-01-16T00:00:00Z"}, {"advisory": "RHSA-2020:0111", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:68.4.1-1.el8_1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-01-14T00:00:00Z"}, {"advisory": "RHSA-2020:0127", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:68.4.1-2.el8_1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-01-16T00:00:00Z"}, {"advisory": "RHSA-2020:0292", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "thunderbird-0:68.4.1-2.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-01-30T00:00:00Z"}, {"advisory": "RHSA-2020:0295", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "firefox-0:68.4.1-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-01-30T00:00:00Z"}], "bugzilla": {"description": "Mozilla: IonMonkey type confusion with StoreElementHole and FallibleStoreElement", "id": "1789214", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1789214"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-843", "details": ["Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1."], "name": "CVE-2019-17026", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2020-01-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-17026\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-17026\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2020-03/#CVE-2019-17026\nhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog"], "threat_severity": "Critical"}