{ "id": "CVE-2020-27302", "sourceIdentifier": "vuln@vdoo.com", "published": "2021-06-04T13:15:08.660", "lastModified": "2021-06-14T18:06:32.763", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "A stack buffer overflow in Realtek RTL8710 (and other Ameba-based devices) can lead to remote code execution via the \"memcpy\" function, when an attacker in Wi-Fi range sends a crafted \"Encrypted GTK\" value as part of the WPA2 4-way-handshake." }, { "lang": "es", "value": "Un desbordamiento del b\u00fafer de la pila en el Realtek RTL8710 (y otros dispositivos basados en Ameba) puede conllevar a una ejecuci\u00f3n de c\u00f3digo remota por medio de la funci\u00f3n \"memcpy\", cuando un atacante en el rango de la Wi-Fi env\u00eda un valor \"Encrypted GTK\" dise\u00f1ado como parte del 4-way-handshake de WPA2" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH" }, "exploitabilityScore": 2.1, "impactScore": 5.9 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:A/AC:L/Au:S/C:C/I:C/A:C", "accessVector": "ADJACENT_NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 7.7 }, "baseSeverity": "HIGH", "exploitabilityScore": 5.1, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-787" } ] } ], "configurations": [ { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:realtek:rtl8710c_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "1F44702F-DFF5-4797-BA71-6CF5591782CF" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:realtek:rtl8710c:-:*:*:*:*:*:*:*", "matchCriteriaId": "DEB9942A-10B7-4838-B437-DA3F842CAA66" } ] } ] }, { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:realtek:rtl8195a_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "5C242328-36B8-4995-8174-378EDB8E6A7A" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:realtek:rtl8195a:-:*:*:*:*:*:*:*", "matchCriteriaId": "62A37D39-5134-4AFE-9F59-C8C36A113B04" } ] } ] } ], "references": [ { "url": "https://www.vdoo.com/blog/realtek-wifi-vulnerabilities-zero-day", "source": "vuln@vdoo.com", "tags": [ "Exploit", "Third Party Advisory" ] } ] }