CVE-2020-15892

{"id": "CVE-2020-15892", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2020-07-22T19:15:12.477", "references": [{"url": "https://research.loginsoft.com/bugs/classic-stack-based-buffer-overflow-in-dlink-firmware-dap-1520/", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-669"}, {"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in apply.cgi on D-Link DAP-1520 devices before 1.10b04Beta02. Whenever a user performs a login action from the web interface, the request values are being forwarded to the ssi binary. On the login page, the web interface restricts the password input field to a fixed length of 15 characters. The problem is that validation is being done on the client side, hence it can be bypassed. When an attacker manages to intercept the login request (POST based) and tampers with the vulnerable parameter (log_pass), to a larger length, the request will be forwarded to the webserver. This results in a stack-based buffer overflow. A few other POST variables, (transferred as part of the login request) are also vulnerable: html_response_page and log_user."}, {"lang": "es", "value": "Se detect\u00f3 un problema en el archivo apply.cgi en los dispositivos D-Link DAP-1520 versiones anteriores a 1.10b04Beta02. Cada vez que un usuario lleva a cabo una acci\u00f3n de inicio de sesi\u00f3n desde la interfaz web, los valores de la petici\u00f3n est\u00e1n siendo reenviados al binario ssi. En la p\u00e1gina de inicio de sesi\u00f3n, la interfaz web restringe el campo de entrada de contrase\u00f1a a una longitud fija de 15 caracteres. El problema es que la comprobaci\u00f3n se est\u00e1 haciendo en el lado del cliente, por lo tanto, se puede omitir. Cuando un atacante logra interceptar la petici\u00f3n de inicio de sesi\u00f3n (basada en POST) y manipula el par\u00e1metro vulnerable (log_pass), a una longitud mayor, la petici\u00f3n ser\u00e1 reenviada al servidor web. Esto resulta en un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria. Algunas otras variables POST (transferidas como parte de la petici\u00f3n de inicio de sesi\u00f3n) tambi\u00e9n son vulnerables: html_response_page y log_user"}], "lastModified": "2023-11-08T22:49:01.097", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dlink:dap-1520_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EECD7723-759E-499C-A784-47C3021D0E2D", "versionEndIncluding": "1.10b04"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dlink:dap-1520:a1:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "FBCD8191-9FE0-455F-B85E-ECE69D678F8C"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}