Show plain JSON{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:realtek:rtl8195a_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "24D4DC02-E833-483C-885F-9E168E5F8A4C", "versionEndExcluding": "2.08", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:realtek:rtl8195a:-:*:*:*:*:*:*:*", "matchCriteriaId": "62A37D39-5134-4AFE-9F59-C8C36A113B04", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "The function DecWPA2KeyData() in the Realtek RTL8195A Wi-Fi Module prior to versions released in April 2020 (up to and excluding 2.08) does not validate the size parameter for an internal function, rt_arc4_crypt_veneer() or _AES_UnWRAP_veneer(), resulting in a stack buffer overflow which can be exploited for remote code execution or denial of service. An attacker can impersonate an Access Point and attack a vulnerable Wi-Fi client, by injecting a crafted packet into the WPA2 handshake. The attacker needs to know the network's PSK in order to exploit this."}, {"lang": "es", "value": "La funci\u00f3n DecWPA2KeyData() en el m\u00f3dulo Wi-Fi Realtek RTL8195A anterior a versiones publicadas en Abril de 2020 (hasta y excluyendo la 2.08), no comprueba el par\u00e1metro size para una funci\u00f3n interna, rt_arc4_crypt_veneer() o _AES_UnWRAP_veneer(), resulta en un desbordamiento del b\u00fafer de la pila que puede ser explotado para una ejecuci\u00f3n de c\u00f3digo remota o una denegaci\u00f3n de servicio. Un atacante puede hacerse pasar por un Access Point y atacar a un cliente Wi-Fi vulnerable al inyectar un paquete dise\u00f1ado en el protocolo de enlace WPA2. El atacante necesita conocer el PSK de la red para explotar esto"}], "id": "CVE-2020-25854", "lastModified": "2024-11-21T05:18:54.527", "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": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-03T17:15:14.747", "references": [{"source": "vuln@vdoo.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/"}], "sourceIdentifier": "vuln@vdoo.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "vuln@vdoo.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}