{"containers": {"cna": {"affected": [{"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "78.10", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "78.10", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "88", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88."}], "problemTypes": [{"descriptions": [{"description": "Port blocking could be bypassed", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-06-24T13:19:43.000Z", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-14/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-16/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-15/"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1698503"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@mozilla.org", "ID": "CVE-2021-29946", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Firefox ESR", "version": {"version_data": [{"version_affected": "<", "version_value": "78.10"}]}}, {"product_name": "Thunderbird", "version": {"version_data": [{"version_affected": "<", "version_value": "78.10"}]}}, {"product_name": "Firefox", "version": {"version_data": [{"version_affected": "<", "version_value": "88"}]}}]}, "vendor_name": "Mozilla"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Port blocking could be bypassed"}]}]}, "references": {"reference_data": [{"name": "https://www.mozilla.org/security/advisories/mfsa2021-14/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-14/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-16/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-16/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-15/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-15/"}, {"name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1698503", "refsource": "MISC", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1698503"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T22:18:03.473Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-14/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-16/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-15/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1698503"}]}]}, "cveMetadata": {"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "cveId": "CVE-2021-29946", "datePublished": "2021-06-24T13:19:43.000Z", "dateReserved": "2021-04-01T00:00:00.000Z", "dateUpdated": "2024-08-03T22:18:03.473Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Frederik Braun as the original reporter.", "affected_release": [{"advisory": "RHSA-2021:1350", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:78.10.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-04-26T00:00:00Z"}, {"advisory": "RHSA-2021:1363", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:78.10.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-04-26T00:00:00Z"}, {"advisory": "RHSA-2021:1353", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:78.10.0-1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-04-26T00:00:00Z"}, {"advisory": "RHSA-2021:1360", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:78.10.0-1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-04-26T00:00:00Z"}, {"advisory": "RHSA-2021:1351", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:78.10.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-04-26T00:00:00Z"}, {"advisory": "RHSA-2021:1362", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:78.10.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-04-26T00:00:00Z"}, {"advisory": "RHSA-2021:1352", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:78.10.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-04-26T00:00:00Z"}, {"advisory": "RHSA-2021:1361", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:78.10.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-04-26T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Port blocking could be bypassed", "id": "1951371", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1951371"}, "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-190", "details": ["Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88."], "name": "CVE-2021-29946", "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": "2021-04-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-29946\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-29946\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-29946"], "threat_severity": "Low"}

{}