CVE-2021-34850

{"containers": {"cna": {"affected": [{"product": "PDF Reader", "vendor": "Foxit", "versions": [{"status": "affected", "version": "11.0.0.49893"}]}], "credits": [{"lang": "en", "value": "Mat Powell of Trend Micro Zero Day Initiative"}], "descriptions": [{"lang": "en", "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14529."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "CWE-416: Use After Free", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-08-04T15:16:43.000Z", "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.foxit.com/support/security-bulletins.html"}, {"tags": ["x_refsource_MISC"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-932/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "zdi-disclosures@trendmicro.com", "ID": "CVE-2021-34850", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "PDF Reader", "version": {"version_data": [{"version_value": "11.0.0.49893"}]}}]}, "vendor_name": "Foxit"}]}}, "credit": "Mat Powell of Trend Micro Zero Day Initiative", "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14529."}]}, "impact": {"cvss": {"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-416: Use After Free"}]}]}, "references": {"reference_data": [{"name": "https://www.foxit.com/support/security-bulletins.html", "refsource": "MISC", "url": "https://www.foxit.com/support/security-bulletins.html"}, {"name": "https://www.zerodayinitiative.com/advisories/ZDI-21-932/", "refsource": "MISC", "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-932/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T00:26:54.602Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.foxit.com/support/security-bulletins.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-932/"}]}]}, "cveMetadata": {"assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "assignerShortName": "zdi", "cveId": "CVE-2021-34850", "datePublished": "2021-08-04T15:16:43.000Z", "dateReserved": "2021-06-17T00:00:00.000Z", "dateUpdated": "2024-08-04T00:26:54.602Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "PDF Reader", "vendor": "Foxit", "versions": [{"status": "affected", "version": "11.0.0.49893"}]}], "source": "zdi-disclosures@trendmicro.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*", "matchCriteriaId": "E84B0750-9030-43D0-A61D-3416B94AA3CF", "versionEndIncluding": "11.0.0.49893", "vulnerable": true}, {"criteria": "cpe:2.3:a:foxitsoftware:pdf_editor:*:*:*:*:*:*:*:*", "matchCriteriaId": "FB827080-15A6-4DBD-859A-93D3AFB0650C", "versionEndIncluding": "10.1.4.37651", "vulnerable": true}, {"criteria": "cpe:2.3:a:foxitsoftware:pdf_editor:11.0.0.49893:*:*:*:*:*:*:*", "matchCriteriaId": "9824C6E0-D7EA-4C16-9870-3FD02D08943D", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14529."}, {"lang": "es", "value": "Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en las instalaciones afectadas de Foxit PDF Reader versi\u00f3n 11.0.0.49893. Es requerida una interacci\u00f3n del usuario para explotar esta vulnerabilidad, ya que el objetivo debe visitar una p\u00e1gina maliciosa o abrir un archivo malicioso. El fallo espec\u00edfico se presenta en el manejo de los objetos Annotation. El problema resulta de una falta de comprobaci\u00f3n de la existencia de un objeto antes de llevar a cabo operaciones en el objeto. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. Fue ZDI-CAN-14529"}], "id": "CVE-2021-34850", "lastModified": "2026-06-17T03:56:40.593", "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}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-08-04T16:15:10.137", "references": [{"source": "zdi-disclosures@trendmicro.com", "tags": ["Vendor Advisory"], "url": "https://www.foxit.com/support/security-bulletins.html"}, {"source": "zdi-disclosures@trendmicro.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-932/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.foxit.com/support/security-bulletins.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-932/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}]}

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