{"id":"CVE-2018-12056","aliases":["EUVD-2018-4039","GHSA-g9vx-xx6g-3r24"],"status":"published","title":"The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling...","description":"The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly readable variables because the _seed value can be retrieved with a getStorageAt call. Therefore, it allows attackers to always win and get rewards.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01675,"percentile":0.7702,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-338"],"published":"2018-08-15T17:00:00Z","modified":"2026-06-17T01:37:04Z","products":[{"vendor":"all-for-one","product":"all_for_one"}],"references":[{"url":"https://medium.com/%40jonghyk.song/to-be-a-winner-of-ethereum-gambling-game-all-for-one-by-breaking-prng-1ab011163d40","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://lists.apache.org/thread.html/a62aa2706105d68f1c02023fe24aaa3c13b4d8a1826181fed07d9682%40%3Cnotifications.zookeeper.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12056"},{"url":"https://lists.apache.org/thread.html/a62aa2706105d68f1c02023fe24aaa3c13b4d8a1826181fed07d9682@%3Cnotifications.zookeeper.apache.org%3E"},{"url":"https://medium.com/@jonghyk.song/to-be-a-winner-of-ethereum-gambling-game-all-for-one-by-breaking-prng-1ab011163d40"},{"url":"https://github.com/advisories/GHSA-g9vx-xx6g-3r24"}],"sources":{"cve":[{"id":"CVE-2018-12056","description":"The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly readable variables because the _seed value can be retrieved with a getStorageAt call. Therefore, it allows attackers to always win and get rewards.","status":"published","published":"2018-08-15T17:00:00Z","modified":"2024-08-05T08:24:03.573Z","updated_at":"2026-11-02T14:35:06.320867Z"}],"euvd":[{"id":"EUVD-2018-4039","description":"The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly readable variables because the _seed value can be retrieved with a getStorageAt call. Therefore, it allows attackers to always win and get rewards.","status":"published","published":"2018-08-15T17:00:00Z","modified":"2024-08-05T08:24:03Z","updated_at":"2026-11-03T02:39:53.575925Z"}],"ghsa":[{"id":"GHSA-g9vx-xx6g-3r24","title":"The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling...","description":"The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly readable variables because the _seed value can be retrieved with a getStorageAt call. Therefore, it allows attackers to always win and get rewards.","status":"published","published":"2022-05-14T00:57:41Z","modified":"2023-02-02T05:02:40Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-338"],"updated_at":"2026-11-02T14:51:29.373702Z"}],"nvd":[{"id":"CVE-2018-12056","description":"The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly readable variables because the _seed value can be retrieved with a getStorageAt call. Therefore, it allows attackers to always win and get rewards.","status":"published","published":"2018-08-15T17:29:00.61Z","modified":"2026-06-17T01:37:04.927Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-338"],"updated_at":"2026-11-02T14:04:36.842579Z"}]}}