{"id":"CVE-2020-25857","state":"PUBLISHED","title":"The function ClientEAPOLKeyRecvd() 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","description":"The function ClientEAPOLKeyRecvd() 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 rtl_memcpy() operation, resulting in a stack buffer overflow 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.","publishedAt":"2021-02-03T16:48:59.000Z","updatedAt":"2024-08-04T15:49:05.909Z","severity":null,"assigner":"VDOO","products":["n/a Realtek RTL8195A Wi-Fi Module"],"affected":[{"vendor":"n/a","product":"Realtek RTL8195A Wi-Fi Module","versions":[{"version":"Versions before 2020-04-21 (up to and excluding 2.08)","status":"affected"}]}],"references":["https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T19:47:05.429Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/25xxx/CVE-2020-25857.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-25857","state":"PUBLISHED","datePublished":"2021-02-03T16:48:59.000Z","dateUpdated":"2024-08-04T15:49:05.909Z","assignerShortName":"VDOO","assignerOrgId":"6b4ace4a-d6e0-415b-9ce8-aa20e97e4b24","dateReserved":"2020-09-23T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The function ClientEAPOLKeyRecvd() 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 rtl_memcpy() operation, resulting in a stack buffer overflow 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."}],"affected":[{"vendor":"n/a","product":"Realtek RTL8195A Wi-Fi Module","versions":[{"version":"Versions before 2020-04-21 (up to and excluding 2.08)","status":"affected"}]}],"references":[{"url":"https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/","tags":["x_refsource_CONFIRM"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"Stack buffer overflow (CWE-121)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"VDOO","dateUpdated":"2021-02-03T16:48:59.000Z","orgId":"6b4ace4a-d6e0-415b-9ce8-aa20e97e4b24"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"vuln@vdoo.com","ID":"CVE-2020-25857","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Realtek RTL8195A Wi-Fi Module","version":{"version_data":[{"version_value":"Versions before 2020-04-21 (up to and excluding 2.08)"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The function ClientEAPOLKeyRecvd() 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 rtl_memcpy() operation, resulting in a stack buffer overflow 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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Stack buffer overflow (CWE-121)"}]}]},"references":{"reference_data":[{"name":"https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/","refsource":"CONFIRM","url":"https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T15:49:05.909Z"}}]}}}