{"containers": {"cna": {"affected": [{"product": "WeChat", "vendor": "Tencent", "versions": [{"status": "affected", "version": "7.0.18"}]}], "credits": [{"lang": "en", "value": "Wen guang Jiao"}], "descriptions": [{"lang": "en", "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. 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 WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11580."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-119", "description": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-12T14:03:23", "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-084/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "zdi-disclosures@trendmicro.com", "ID": "CVE-2020-27874", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "WeChat", "version": {"version_data": [{"version_value": "7.0.18"}]}}]}, "vendor_name": "Tencent"}]}}, "credit": "Wen guang Jiao", "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 Tencent WeChat 7.0.18. 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 WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11580."}]}, "impact": {"cvss": {"vectorString": "CVSS:3.0/AV:N/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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer"}]}]}, "references": {"reference_data": [{"name": "https://www.zerodayinitiative.com/advisories/ZDI-21-084/", "refsource": "MISC", "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-084/"}]}}}}, "cveMetadata": {"assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "assignerShortName": "zdi", "cveId": "CVE-2020-27874", "datePublished": "2021-02-10T22:15:17", "dateReserved": "2020-10-27T00:00:00", "dateUpdated": "2021-03-12T14:03:23", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:tencent:wechat:7.0.18:*:*:*:*:android:*:*", "matchCriteriaId": "B6392ECE-7742-4E0C-9B31-66EB390BFA4B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. 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 WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11580."}, {"lang": "es", "value": "Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en instalaciones afectadas de Tencent WeChat versi\u00f3n 7.0.18. 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 dentro del decodificador WXAM. El problema resulta de la falta de comprobaci\u00f3n apropiada de los datos suministrados por el usuario, lo que puede resultar en un acceso a la memoria m\u00e1s all\u00e1 del final de un objeto asignado. Un atacante puede explotar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. Era ZDI-CAN-11580"}], "id": "CVE-2020-27874", "lastModified": "2021-10-18T12:53:38.167", "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": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}], "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": "2021-02-10T23:15:12.590", "references": [{"source": "zdi-disclosures@trendmicro.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-084/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "zdi-disclosures@trendmicro.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

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