GSD-2018-14715
Vulnerability from gsd - Updated: 2023-12-13 01:22Details
The endCoinFlip function and throwSlammer function of the smart contract implementations for Cryptogs, an Ethereum game, generate random numbers with an old block's hash. Therefore, attackers can predict the random number and always win the game.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2018-14715",
"description": "The endCoinFlip function and throwSlammer function of the smart contract implementations for Cryptogs, an Ethereum game, generate random numbers with an old block\u0027s hash. Therefore, attackers can predict the random number and always win the game.",
"id": "GSD-2018-14715"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2018-14715"
],
"details": "The endCoinFlip function and throwSlammer function of the smart contract implementations for Cryptogs, an Ethereum game, generate random numbers with an old block\u0027s hash. Therefore, attackers can predict the random number and always win the game.",
"id": "GSD-2018-14715",
"modified": "2023-12-13T01:22:38.458245Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2018-14715",
"STATE": "PUBLIC"
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"affects": {
"vendor": {
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{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
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}
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"vendor_name": "n/a"
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"data_type": "CVE",
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"description": {
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{
"lang": "eng",
"value": "The endCoinFlip function and throwSlammer function of the smart contract implementations for Cryptogs, an Ethereum game, generate random numbers with an old block\u0027s hash. Therefore, attackers can predict the random number and always win the game."
}
]
},
"problemtype": {
"problemtype_data": [
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"description": [
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"lang": "eng",
"value": "n/a"
}
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"references": {
"reference_data": [
{
"name": "https://medium.com/@jonghyk.song/attack-on-pseudo-random-number-generator-prng-used-in-cryptogs-an-ethereum-cve-2018-14715-f63a51ac2eb9",
"refsource": "MISC",
"url": "https://medium.com/@jonghyk.song/attack-on-pseudo-random-number-generator-prng-used-in-cryptogs-an-ethereum-cve-2018-14715-f63a51ac2eb9"
}
]
}
},
"nvd.nist.gov": {
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"nodes": [
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"children": [],
"cpe_match": [
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"cpe23Uri": "cpe:2.3:a:cryptogs:cryptogs:-:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
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"operator": "OR"
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"cve": {
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"description": {
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"value": "The endCoinFlip function and throwSlammer function of the smart contract implementations for Cryptogs, an Ethereum game, generate random numbers with an old block\u0027s hash. Therefore, attackers can predict the random number and always win the game."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-338"
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"references": {
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"refsource": "MISC",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://medium.com/@jonghyk.song/attack-on-pseudo-random-number-generator-prng-used-in-cryptogs-an-ethereum-cve-2018-14715-f63a51ac2eb9"
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},
"impact": {
"baseMetricV2": {
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
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"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2018-10-02T19:30Z",
"publishedDate": "2018-08-03T18:29Z"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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