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115 lines
4.1 KiB
JSON
115 lines
4.1 KiB
JSON
{
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"id": "CVE-2018-19417",
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"sourceIdentifier": "cve@mitre.org",
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"published": "2018-11-21T20:29:00.307",
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"lastModified": "2024-11-21T03:57:53.160",
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"vulnStatus": "Modified",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "An issue was discovered in the MQTT server in Contiki-NG before 4.2. The function parse_publish_vhdr() that parses MQTT PUBLISH messages with a variable length header uses memcpy to input data into a fixed size buffer. The allocated buffer can fit only MQTT_MAX_TOPIC_LENGTH (default 64) bytes, and a length check is missing. This could lead to Remote Code Execution via a stack-smashing attack (overwriting the function return address). Contiki-NG does not separate the MQTT server from other servers and the OS modules, so access to all memory regions is possible."
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},
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{
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"lang": "es",
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"value": "Se ha descubierto un problema en el servidor MQTT en Contiki-NG, en versiones anteriores a la 4.2. La funci\u00f3n parse_publish_vhdr() que analiza los mensajes MQTT PUBLISH con una cabecera length variable emplea memcpy para introducir datos en un tama\u00f1o de b\u00fafer fijo. El b\u00fafer asignado solo puede ajustarse a MQTT_MAX_TOPIC_LENGTH (64 bytes por defecto) y carece de una comprobaci\u00f3n de longitud. Esto podr\u00eda conducir a la ejecuci\u00f3n remota de c\u00f3digo mediante un ataque de \"stack-smashing\" (que sobrescribe la direcci\u00f3n de retorno de la funci\u00f3n). Contiki-NG no separa el servidor MQTT de otros servidores y los m\u00f3dulos del sistema operativo, por lo que se puede acceder a todas las regiones de memoria."
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}
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],
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"metrics": {
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"cvssMetricV30": [
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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": "3.0",
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"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
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"baseScore": 10.0,
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"baseSeverity": "CRITICAL",
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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": "CHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH"
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},
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"exploitabilityScore": 3.9,
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"impactScore": 6.0
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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:C/I:C/A:C",
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"baseScore": 10.0,
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"accessVector": "NETWORK",
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"accessComplexity": "LOW",
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"authentication": "NONE",
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"confidentialityImpact": "COMPLETE",
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"integrityImpact": "COMPLETE",
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"availabilityImpact": "COMPLETE"
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},
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"baseSeverity": "HIGH",
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"exploitabilityScore": 10.0,
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"impactScore": 10.0,
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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-119"
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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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"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:a:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "4.2",
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"matchCriteriaId": "19FF5310-545E-48F8-880F-E20E885BEF85"
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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://github.com/contiki-ng/contiki-ng/issues/600",
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"source": "cve@mitre.org",
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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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"url": "https://github.com/contiki-ng/contiki-ng/issues/600",
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"source": "af854a3a-2127-422b-91ae-364da2661108",
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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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} |