CVE-2023-37281

{"id": "CVE-2023-37281", "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2023-09-15T20:15:08.310", "references": [{"url": "https://github.com/contiki-ng/contiki-ng/pull/2509", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-2v4c-9p48-g9pr", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done before decompressing the IPv6 address. Therefore, up to 16 bytes can be read out of bounds on the line with the statement `memcpy(&ipaddr->u8[16 - postcount], iphc_ptr, postcount);`. The value of `postcount` depends on the address compression used in the received packet and can be controlled by the attacker. As a result, an attacker can inject a packet that causes an out-of-bound read. As of time of publication, a patched version is not available. As a workaround, one can apply the changes in Contiki-NG pull request #2509 to patch the system."}, {"lang": "es", "value": "Contiki-NG es un sistema operativo para dispositivos de Internet de las cosas. En las versiones 4.9 y anteriores, al procesar los diversos campos del encabezado IPv6 durante la descompresi\u00f3n del encabezado IPHC, Contiki-NG confirma que el b\u00fafer del paquete recibido contiene suficientes datos necesarios para ese campo. Pero no se realiza ninguna verificaci\u00f3n similar antes de descomprimir la direcci\u00f3n IPv6. Por lo tanto, se pueden leer hasta 16 bytes fuera de l\u00edmites en la l\u00ednea con la declaraci\u00f3n `memcpy(&ipaddr->u8[16 - postcount], iphc_ptr, postcount);`. El valor de \"postcount\" depende de la compresi\u00f3n de direcci\u00f3n utilizada en el paquete recibido y puede ser controlado por el atacante. Como resultado, un atacante puede inyectar un paquete que provoque una lectura fuera de los l\u00edmites. En el momento de la publicaci\u00f3n, no hay una versi\u00f3n parcheada disponible. Como workaround, se pueden aplicar los cambios en la solicitud de extracci\u00f3n #2509 de Contiki-NG para parchear el sistema."}], "lastModified": "2023-09-19T15:14:11.227", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5ECE789E-8C10-42CB-BD98-A301AC471904", "versionEndIncluding": "4.9"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}