{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/\"qosIndex \"request. This occurs because the \"formQOSRuleDel\" function directly passes the parameter \"qosIndex\" to strcpy without limit."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-04-14T14:52:09.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-27705", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/\"qosIndex \"request. This occurs because the \"formQOSRuleDel\" function directly passes the parameter \"qosIndex\" to strcpy without limit."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg", "refsource": "MISC", "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T21:26:10.726Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-27705", "datePublished": "2021-04-14T14:52:09.000Z", "dateReserved": "2021-02-25T00:00:00.000Z", "dateUpdated": "2024-08-03T21:26:10.726Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tenda:g1_firmware:v15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "matchCriteriaId": "98669DBF-D56B-4E2D-9A12-813CEC185170", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tenda:g1:-:*:*:*:*:*:*:*", "matchCriteriaId": "FD313047-8A0F-44BD-A75B-F4CF2F4DD8F6", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tenda:g3_firmware:v15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "matchCriteriaId": "01254E20-AFFD-4A1A-A956-36BFD85017D4", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tenda:g3:-:*:*:*:*:*:*:*", "matchCriteriaId": "7A1B3B7C-2164-40B6-959A-188796737C16", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/\"qosIndex \"request. This occurs because the \"formQOSRuleDel\" function directly passes the parameter \"qosIndex\" to strcpy without limit."}, {"lang": "es", "value": "Un desbordamiento de b\u00fafer en los enrutadores Tenda versiones G1 y G3 con firmware v15.11.0.17(9502) _CN, permite a atacantes remotos ejecutar c\u00f3digo arbitrario por medio de una petici\u00f3n dise\u00f1ada action/\"qosIndex\". Esto ocurre porque la funci\u00f3n \"formQOSRuleDel\" pasa directamente el par\u00e1metro \"qosIndex\" a strcpy sin l\u00edmite"}], "id": "CVE-2021-27705", "lastModified": "2026-06-17T03:45:21.953", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-04-14T15:15:13.970", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}