mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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128 lines
4.2 KiB
JSON
128 lines
4.2 KiB
JSON
{
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"id": "CVE-2020-25853",
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"sourceIdentifier": "vuln@vdoo.com",
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"published": "2021-02-03T17:15:14.187",
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"lastModified": "2021-02-08T18:23:25.117",
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"vulnStatus": "Analyzed",
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"descriptions": [
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{
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"lang": "en",
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"value": "The function CheckMic() 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_md5_hmac_veneer() or _rt_hmac_sha1_veneer(), resulting in a stack buffer over-read which can be exploited for 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 does not need to know the network's PSK."
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},
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{
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"lang": "es",
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"value": "La funci\u00f3n CheckMic() 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_md5_hmac_veneer() o _rt_hmac_sha1_veneer(), resulta en una lectura excesiva del b\u00fafer de pila que puede ser explotada para 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 no necesita conocer el PSK de la red"
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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"exploitabilityScore": 3.9,
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"impactScore": 3.6
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}
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],
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"cvssMetricV2": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "2.0",
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
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"accessVector": "NETWORK",
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"accessComplexity": "LOW",
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"authentication": "NONE",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "PARTIAL",
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"baseScore": 5.0
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},
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"baseSeverity": "MEDIUM",
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"exploitabilityScore": 10.0,
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"impactScore": 2.9,
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"acInsufInfo": false,
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"obtainAllPrivilege": false,
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"obtainUserPrivilege": false,
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"obtainOtherPrivilege": false,
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"userInteractionRequired": false
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-125"
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}
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]
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},
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{
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"source": "vuln@vdoo.com",
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"type": "Secondary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-126"
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}
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]
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}
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],
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"configurations": [
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{
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"operator": "AND",
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:realtek:rtl8195a_firmware:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "2.08",
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"matchCriteriaId": "24D4DC02-E833-483C-885F-9E168E5F8A4C"
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}
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]
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},
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": false,
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"criteria": "cpe:2.3:h:realtek:rtl8195a:-:*:*:*:*:*:*:*",
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"matchCriteriaId": "62A37D39-5134-4AFE-9F59-C8C36A113B04"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/",
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"source": "vuln@vdoo.com",
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"tags": [
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"Exploit",
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"Third Party Advisory"
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]
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}
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]
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} |