CVE-2021-38500

{"containers": {"cna": {"affected": [{"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "78.15", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "78.15", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "93", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93."}], "problemTypes": [{"descriptions": [{"description": "Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-01-04T11:06:29.000Z", "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://www.mozilla.org/security/advisories/mfsa2021-46/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-44/"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1725854%2C1728321"}, {"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-2021-38500", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Thunderbird", "version": {"version_data": [{"version_affected": "<", "version_value": "78.15"}, {"version_affected": "<", "version_value": "91.2"}]}}, {"product_name": "Firefox ESR", "version": {"version_data": [{"version_affected": "<", "version_value": "91.2"}, {"version_affected": "<", "version_value": "78.15"}]}}, {"product_name": "Firefox", "version": {"version_data": [{"version_affected": "<", "version_value": "93"}]}}]}, "vendor_name": "Mozilla"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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{"affected": [{"affectedData": [{"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "78.15", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "91.2", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "78.15", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "93", "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:*:*:*:*:*:*:*:*", "matchCriteriaId": "CF07F56E-2A0C-46C8-B6D9-4F2B6518FA49", "versionEndExcluding": "91.2", "versionStartIncluding": "91.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "FE7CF283-671F-4E2D-B39A-2C1FB1D75765", "versionEndExcluding": "78.15", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "DA754B21-67B9-4E82-BFD9-66BF3EBD072A", "versionEndExcluding": "78.15", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "F6E6D14E-D392-47F0-88F9-B29B4830FC64", "versionEndExcluding": "91.2", "versionStartIncluding": "91.0", "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 reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93."}, {"lang": "es", "value": "Los desarrolladores de Mozilla informaron de bugs de seguridad de memoria presentes en Firefox 92 y Firefox ESR 91.1. 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 Thunderbird versiones anteriores a 78.15, Thunderbird versiones anteriores a 91.2, Firefox ESR versiones anteriores a 91.2, Firefox ESR versiones anteriores a 78.15 y Firefox versiones anteriores a 93"}], "id": "CVE-2021-38500", "lastModified": "2026-06-17T04:02:14.040", "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": "2021-11-03T01:15:07.570", "references": [{"source": "security@mozilla.org", "tags": ["Broken Link", "Issue Tracking"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1725854%2C1728321"}, {"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": ["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/mfsa2021-43/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-44/"}, {"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/mfsa2021-46/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-47/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Issue Tracking"], "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1725854%2C1728321"}, {"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": ["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/mfsa2021-43/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-44/"}, {"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/mfsa2021-46/"}, {"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": "NVD-CWE-noinfo"}], "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: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2", "id": "2011100", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2011100"}, "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 reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93."], "name": "CVE-2021-38500", "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-2021-38500\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-38500"], "threat_severity": "Important"}

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