CVE-2021-29984

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This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91."}], "problemTypes": [{"descriptions": [{"description": "Incorrect instruction reordering during JIT optimization", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-08-10T06:08:08.000Z", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-33/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-35/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-34/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-36/"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1720031"}, {"name": "GLSA-202202-03", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202202-03"}, {"name": "GLSA-202208-14", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202208-14"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@mozilla.org", "ID": "CVE-2021-29984", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Thunderbird", "version": {"version_data": [{"version_affected": "<", "version_value": "78.13"}, {"version_affected": "<", "version_value": "91"}]}}, {"product_name": "Firefox ESR", "version": {"version_data": [{"version_affected": "<", "version_value": "78.13"}]}}, {"product_name": "Firefox", "version": {"version_data": [{"version_affected": "<", "version_value": "91"}]}}]}, "vendor_name": "Mozilla"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Incorrect instruction reordering during JIT optimization"}]}]}, "references": {"reference_data": [{"name": "https://www.mozilla.org/security/advisories/mfsa2021-33/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-33/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-35/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-35/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-34/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-34/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-36/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-36/"}, {"name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1720031", "refsource": "MISC", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1720031"}, {"name": "GLSA-202202-03", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202202-03"}, {"name": "GLSA-202208-14", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202208-14"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T22:24:59.218Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-33/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-35/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-34/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-36/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1720031"}, {"name": "GLSA-202202-03", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202202-03"}, {"name": "GLSA-202208-14", "tags": ["vendor-advisory", "x_refsource_GENTOO", "x_transferred"], "url": "https://security.gentoo.org/glsa/202208-14"}]}]}, "cveMetadata": {"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "cveId": "CVE-2021-29984", "datePublished": "2021-08-17T19:12:33.000Z", "dateReserved": "2021-04-01T00:00:00.000Z", "dateUpdated": "2024-08-03T22:24:59.218Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "78.13", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "91", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "78.13", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "91", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "E2960D13-5DCE-4A97-8586-B259C31DEBFE", "versionEndExcluding": "91.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "51532DF1-F667-4D32-ACD9-952C1D48EE16", "versionEndExcluding": "78.13.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "93AD06BB-2924-4813-BE44-D990F25CCF97", "versionEndExcluding": "78.13.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91."}, {"lang": "es", "value": "Una reordenaci\u00f3n de instrucciones resultaba en una secuencia de instrucciones que causar\u00eda que un objeto fuera considerado incorrectamente durante la recogida de basura. Esto conllevaba a una corrupci\u00f3n de la memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.13, Thunderbird versiones anteriores a 91, Firefox ESR versiones anteriores a 78.13, y Firefox versiones anteriores a 91."}], "id": "CVE-2021-29984", "lastModified": "2026-06-17T03:48:33.413", "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"}]}, "published": "2021-08-17T20:15:07.850", "references": [{"source": "security@mozilla.org", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1720031"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202202-03"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-14"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-33/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-34/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-35/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-36/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1720031"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202202-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-14"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-33/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-34/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-35/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-36/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:3154", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:78.13.0-2.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3160", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:78.13.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3155", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:78.13.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3157", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:78.13.0-2.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3159", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:78.13.0-2.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3161", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:78.13.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3156", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:78.13.0-2.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3162", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:78.13.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Incorrect instruction reordering during JIT optimization", "id": "1992420", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1992420"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91."], "name": "CVE-2021-29984", "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": "2021-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-29984\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-29984"], "threat_severity": "Important"}

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