CVE-2021-43534

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This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3."}], "problemTypes": [{"descriptions": [{"description": "Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-01-04T11:07:06.000Z", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-49/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-50/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-48/"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152"}, {"name": "DSA-5026", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2021/dsa-5026"}, {"name": "[debian-lts-announce] 20211229 [SECURITY] [DLA 2863-1] firefox-esr security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html"}, {"name": "DSA-5034", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2022/dsa-5034"}, {"name": "[debian-lts-announce] 20220104 [SECURITY] [DLA 2874-1] thunderbird security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@mozilla.org", "ID": "CVE-2021-43534", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Firefox", "version": {"version_data": [{"version_affected": "<", "version_value": "94"}]}}, {"product_name": "Thunderbird", "version": {"version_data": [{"version_affected": "<", "version_value": "91.3"}]}}, {"product_name": "Firefox ESR", "version": {"version_data": [{"version_affected": "<", "version_value": "91.3"}]}}]}, "vendor_name": "Mozilla"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. 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This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3"}]}]}, "references": {"reference_data": [{"name": "https://www.mozilla.org/security/advisories/mfsa2021-49/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-49/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-50/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-50/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-48/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-48/"}, {"name": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152", "refsource": "MISC", "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152"}, {"name": "DSA-5026", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2021/dsa-5026"}, {"name": "[debian-lts-announce] 20211229 [SECURITY] [DLA 2863-1] firefox-esr security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html"}, {"name": "DSA-5034", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2022/dsa-5034"}, {"name": "[debian-lts-announce] 20220104 [SECURITY] [DLA 2874-1] thunderbird security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T03:55:29.303Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-49/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-50/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-48/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152"}, {"name": "DSA-5026", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "https://www.debian.org/security/2021/dsa-5026"}, {"name": "[debian-lts-announce] 20211229 [SECURITY] [DLA 2863-1] firefox-esr security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html"}, {"name": "DSA-5034", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "https://www.debian.org/security/2022/dsa-5034"}, {"name": "[debian-lts-announce] 20220104 [SECURITY] [DLA 2874-1] thunderbird security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"}]}]}, "cveMetadata": {"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "cveId": "CVE-2021-43534", "datePublished": "2021-12-08T21:20:42.000Z", "dateReserved": "2021-11-08T00:00:00.000Z", "dateUpdated": "2024-08-04T03:55:29.303Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "94", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "91.3", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "91.3", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "A22FDA8A-B862-4383-9C8E-C162713AB01B", "versionEndExcluding": "94.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "DEA65EE6-233C-4CC1-83E8-316748943DAF", "versionEndExcluding": "91.3.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "65E19CA9-5FDF-4253-8D56-FD82239F7D93", "versionEndExcluding": "91.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3."}, {"lang": "es", "value": "Los desarrolladores y miembros de la comunidad de Mozilla informaron de bugs de seguridad de memoria presentes en Firefox 93 y Firefox ESR 91.2. Algunos de estos bugs mostraban evidencias de corrupci\u00f3n de memoria y suponemos que con suficiente esfuerzo algunos de ellos podr\u00edan haber sido explotados para ejecutar c\u00f3digo arbitrario. Esta vulnerabilidad afecta a Firefox versiones anteriores a 94, Thunderbird versiones anteriores a 91.3 y Firefox ESR versiones anteriores a 91.3"}], "id": "CVE-2021-43534", "lastModified": "2026-06-17T04:11:05.053", "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": "2021-12-08T22:15:09.467", "references": [{"source": "security@mozilla.org", "tags": ["Broken Link", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152"}, {"source": "security@mozilla.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html"}, {"source": "security@mozilla.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-5026"}, {"source": "security@mozilla.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://www.debian.org/security/2022/dsa-5034"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-48/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-49/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-50/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-5026"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://www.debian.org/security/2022/dsa-5034"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-48/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-49/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-50/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:4116", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:91.3.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-11-03T00:00:00Z"}, {"advisory": "RHSA-2021:4134", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:91.3.0-2.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-11-04T00:00:00Z"}, {"advisory": "RHSA-2021:4123", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:91.3.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-03T00:00:00Z"}, {"advisory": "RHSA-2021:4130", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:91.3.0-2.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-04T00:00:00Z"}, {"advisory": "RHSA-2021:4133", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:91.3.0-2.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-11-04T00:00:00Z"}, {"advisory": "RHSA-2021:4607", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:91.3.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-11-10T00:00:00Z"}, {"advisory": "RHSA-2021:4132", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:91.3.0-2.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-11-04T00:00:00Z"}, {"advisory": "RHSA-2021:4605", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:91.3.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-11-10T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3", "id": "2019630", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2019630"}, "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-120", "details": ["Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.", "The Mozilla Foundation Security Advisory describes this flaw as:\nMemory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code"], "name": "CVE-2021-43534", "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": "2021-11-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-43534\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-43534"], "threat_severity": "Important"}

{}