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105 lines
3.6 KiB
JSON
105 lines
3.6 KiB
JSON
{
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"id": "CVE-2018-17071",
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"sourceIdentifier": "cve@mitre.org",
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"published": "2018-09-18T21:29:03.807",
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"lastModified": "2018-12-10T14:53:01.917",
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"vulnStatus": "Analyzed",
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"descriptions": [
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{
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"lang": "en",
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"value": "The fallback function of a simple lottery smart contract implementation for Lucky9io, an Ethereum gambling game, generates a random value with the publicly readable variable entry_number. This variable is private, yet it is readable by eth.getStorageAt function. Also, attackers can purchase a ticket at a low price by directly calling the fallback function with small msg.value, because the developer set the currency unit incorrectly. Therefore, it allows attackers to always win and get rewards."
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},
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{
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"lang": "es",
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"value": "La funci\u00f3n fallback de una simple implementaci\u00f3n de contrato inteligente de loter\u00eda para Lucky9io, un juego de apuestas de Ethereum, genera un valor aleatorio con la variable legible p\u00fablicamente entry_number. Este valor es privado, aunque puede ser le\u00eddo por la funci\u00f3n eth.getStorageAt. Adem\u00e1s, los atacantes pueden comprar un ticket a bajo precio llamando directamente a la funci\u00f3n fallback con un msg.value peque\u00f1o. Esto se debe a que el desarrollador ha establecido la divisa incorrectamente. Por lo tanto, permite que los atacantes ganen siempre y obtengan recompensas."
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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:U/C:H/I:N/A:N",
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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": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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"availabilityImpact": "NONE",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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"exploitabilityScore": 3.9,
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"impactScore": 3.6
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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:P/I:N/A:N",
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"accessVector": "NETWORK",
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"accessComplexity": "LOW",
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"authentication": "NONE",
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"confidentialityImpact": "PARTIAL",
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"integrityImpact": "NONE",
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"availabilityImpact": "NONE",
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"baseScore": 5.0
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},
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"baseSeverity": "MEDIUM",
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"exploitabilityScore": 10.0,
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"impactScore": 2.9,
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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-338"
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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:lucky9:lucky9io:-:*:*:*:*:*:*:*",
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"matchCriteriaId": "A90B2110-2E27-4E5F-B298-6A62FE97F3E1"
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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/TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17071",
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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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} |