CVE-2021-38498

{"containers": {"cna": {"affected": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "93", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2."}], "problemTypes": [{"descriptions": [{"description": "Use-after-free of nsLanguageAtomService object", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-11-03T00:03:15.000Z", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-47/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-45/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-43/"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@mozilla.org", "ID": "CVE-2021-38498", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Firefox", "version": {"version_data": [{"version_affected": "<", "version_value": "93"}]}}, {"product_name": "Thunderbird", "version": {"version_data": [{"version_affected": "<", "version_value": "91.2"}]}}, {"product_name": "Firefox ESR", "version": {"version_data": [{"version_affected": "<", "version_value": "91.2"}]}}]}, "vendor_name": "Mozilla"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Use-after-free of nsLanguageAtomService object"}]}]}, "references": {"reference_data": [{"name": "https://www.mozilla.org/security/advisories/mfsa2021-47/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-47/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-45/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-45/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-43/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-43/"}, {"name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642", "refsource": "MISC", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:44:22.834Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-47/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-45/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-43/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642"}]}]}, "cveMetadata": {"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "cveId": "CVE-2021-38498", "datePublished": "2021-11-03T00:03:15.000Z", "dateReserved": "2021-08-10T00:00:00.000Z", "dateUpdated": "2024-08-04T01:44:22.834Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "93", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "B38B28B1-FAB5-47DB-9C73-0CFB79CCDE79", "versionEndExcluding": "93.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D720984-09FD-4541-BCC5-DC3FE4A9A48F", "versionEndExcluding": "91.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "0FDD43C9-F32C-409E-B563-BD137C63A7B8", "versionEndExcluding": "91.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2."}, {"lang": "es", "value": "Durante el cierre del proceso, un documento podr\u00eda haber causado un uso de memoria previamente liberada de un objeto de servicio de idiomas, conllevando a una corrupci\u00f3n de memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox versiones anteriores a 93, Thunderbird versiones anteriores a 91.2 y Firefox ESR versiones anteriores a 91.2"}], "id": "CVE-2021-38498", "lastModified": "2026-06-17T04:02:13.823", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-11-03T01:15:07.470", "references": [{"source": "security@mozilla.org", "tags": ["Permissions Required", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-43/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-45/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-47/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-43/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-45/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-47/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:3791", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:91.2.0-4.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-10-12T00:00:00Z"}, {"advisory": "RHSA-2021:3841", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:91.2.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-10-13T00:00:00Z"}, {"advisory": "RHSA-2021:3755", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:91.2.0-4.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-10-11T00:00:00Z"}, {"advisory": "RHSA-2021:3838", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:91.2.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-10-13T00:00:00Z"}, {"advisory": "RHSA-2021:3757", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:91.2.0-4.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-10-11T00:00:00Z"}, {"advisory": "RHSA-2021:3840", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:91.2.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-10-13T00:00:00Z"}, {"advisory": "RHSA-2021:3756", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:91.2.0-4.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-10-11T00:00:00Z"}, {"advisory": "RHSA-2021:3839", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:91.2.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-10-13T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Use-after-free of nsLanguageAtomService object", "id": "2011099", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2011099"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2."], "name": "CVE-2021-38498", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2021-10-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-38498\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-38498"], "threat_severity": "Moderate"}

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