CVE-2024-32017

{"id": "CVE-2024-32017", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "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": "2024-05-01T07:15:39.280", "references": [{"url": "http://seclists.org/fulldisclosure/2024/May/7", "source": "security-advisories@github.com"}, {"url": "http://www.openwall.com/lists/oss-security/2024/05/07/3", "source": "security-advisories@github.com"}, {"url": "https://github.com/RIOT-OS/RIOT/blob/master/sys/net/application_layer/gcoap/dns.c#L319-L325", "source": "security-advisories@github.com"}, {"url": "https://github.com/RIOT-OS/RIOT/blob/master/sys/net/application_layer/gcoap/forward_proxy.c#L352", "source": "security-advisories@github.com"}, {"url": "https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-v97j-w9m6-c4h3", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "RIOT is a real-time multi-threading operating system that supports a range of devices that are typically 8-bit, 16-bit and 32-bit microcontrollers. The size check in the `gcoap_dns_server_proxy_get()` function contains a small typo that may lead to a buffer overflow in the subsequent `strcpy()`. In detail, the length of the `_uri` string is checked instead of the length of the `_proxy` string. The `_gcoap_forward_proxy_copy_options()` function does not implement an explicit size check before copying data to the `cep->req_etag` buffer that is `COAP_ETAG_LENGTH_MAX` bytes long. If an attacker can craft input so that `optlen` becomes larger than `COAP_ETAG_LENGTH_MAX`, they can cause a buffer overflow. If the input above is attacker-controlled and crosses a security boundary, the impact of the buffer overflow vulnerabilities could range from denial of service to arbitrary code execution. This issue has yet to be patched. Users are advised to add manual bounds checking."}, {"lang": "es", "value": "RIOT es un sistema operativo multiproceso en tiempo real que admite una variedad de dispositivos que suelen ser microcontroladores de 8, 16 y 32 bits. La verificaci\u00f3n de tama\u00f1o en la funci\u00f3n `gcoap_dns_server_proxy_get()` contiene un peque\u00f1o error tipogr\u00e1fico que puede provocar un desbordamiento del b\u00fafer en el `strcpy()` posterior. En detalle, se verifica la longitud de la cadena `_uri` en lugar de la longitud de la cadena `_proxy`. La funci\u00f3n `_gcoap_forward_proxy_copy_options()` no implementa una verificaci\u00f3n de tama\u00f1o expl\u00edcita antes de copiar datos al buffer `cep->req_etag` que tiene una longitud de bytes `COAP_ETAG_LENGTH_MAX`. Si un atacante puede crear una entrada para que \"optlen\" sea m\u00e1s grande que \"COAP_ETAG_LENGTH_MAX\", puede provocar un desbordamiento del b\u00fafer. Si la entrada anterior est\u00e1 controlada por un atacante y cruza un l\u00edmite de seguridad, el impacto de las vulnerabilidades de desbordamiento del b\u00fafer podr\u00eda variar desde denegaci\u00f3n de servicio hasta ejecuci\u00f3n de c\u00f3digo arbitrario. Este problema a\u00fan no se ha solucionado. Se recomienda a los usuarios que agreguen la verificaci\u00f3n manual de los l\u00edmites."}], "lastModified": "2024-06-10T18:15:31.880", "sourceIdentifier": "security-advisories@github.com"}