CVE-2021-23984

{"containers": {"cna": {"affected": [{"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "78.9", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "87", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "78.9", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9."}], "problemTypes": [{"descriptions": [{"description": "Malicious extensions could have spoofed popup information", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-06-24T13:28:37.000Z", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-10/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-12/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-11/"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1693664"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@mozilla.org", "ID": "CVE-2021-23984", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Firefox ESR", "version": {"version_data": [{"version_affected": "<", "version_value": "78.9"}]}}, {"product_name": "Firefox", "version": {"version_data": [{"version_affected": "<", "version_value": "87"}]}}, {"product_name": "Thunderbird", "version": {"version_data": [{"version_affected": "<", "version_value": "78.9"}]}}]}, "vendor_name": "Mozilla"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Malicious extensions could have spoofed popup information"}]}]}, "references": {"reference_data": [{"name": "https://www.mozilla.org/security/advisories/mfsa2021-10/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-10/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-12/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-12/"}, {"name": "https://www.mozilla.org/security/advisories/mfsa2021-11/", "refsource": "MISC", "url": "https://www.mozilla.org/security/advisories/mfsa2021-11/"}, {"name": "https://bugzilla.mozilla.org/show_bug.cgi?id=1693664", "refsource": "MISC", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1693664"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T19:14:10.003Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-10/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-12/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-11/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1693664"}]}]}, "cveMetadata": {"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "cveId": "CVE-2021-23984", "datePublished": "2021-03-31T13:41:34.000Z", "dateReserved": "2021-01-13T00:00:00.000Z", "dateUpdated": "2024-08-03T19:14:10.003Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "78.9", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "87", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "78.9", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "3533FF74-0FD6-447B-9C37-D491D18EA529", "versionEndExcluding": "87.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "907D294D-2667-4A67-A4B7-2DDE46BE592D", "versionEndExcluding": "78.9", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "AB6DE7E3-8F1B-4525-8992-FCDC7CC063D3", "versionEndExcluding": "78.9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9."}, {"lang": "es", "value": "Una extensi\u00f3n maliciosa podr\u00eda haber abierto una ventana emergente sin una barra de direcciones. El t\u00edtulo de la ventana emergente que carece de una barra de direcciones no deber\u00eda ser totalmente controlable, pero en esta situaci\u00f3n s\u00ed lo era. Esto podr\u00eda haber sido usado para falsificar un sitio web e intentar enga\u00f1ar al usuario para que proporcione credenciales. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 78.9, Firefox versiones anteriores a 87, and Thunderbird versiones anteriores a 78.9"}], "id": "CVE-2021-23984", "lastModified": "2026-06-17T03:39:06.773", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-31T14:15:19.170", "references": [{"source": "security@mozilla.org", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1693664"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-10/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-11/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-12/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1693664"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-10/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-11/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-12/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Rob Wu as the original reporter.", "affected_release": [{"advisory": "RHSA-2021:0992", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:78.9.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-03-25T00:00:00Z"}, {"advisory": "RHSA-2021:0996", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:78.9.0-3.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-03-25T00:00:00Z"}, {"advisory": "RHSA-2021:0990", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:78.9.0-1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-03-25T00:00:00Z"}, {"advisory": "RHSA-2021:0993", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:78.9.0-3.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-03-25T00:00:00Z"}, {"advisory": "RHSA-2021:0991", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:78.9.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-03-25T00:00:00Z"}, {"advisory": "RHSA-2021:0995", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:78.9.0-3.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-03-25T00:00:00Z"}, {"advisory": "RHSA-2021:0989", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:78.9.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-03-25T00:00:00Z"}, {"advisory": "RHSA-2021:0994", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:78.9.0-3.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-03-25T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Malicious extensions could have spoofed popup information", "id": "1942786", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1942786"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-1021", "details": ["A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.", "The Mozilla Foundation Security Advisory describes this issue as:\nA malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials."], "name": "CVE-2021-23984", "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": "2021-03-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-23984\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-23984\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2021-11/#CVE-2021-23984"], "threat_severity": "Moderate"}

{}