GHSA-8CGR-4WGX-XQX4

Vulnerability from github – Published: 2022-05-14 01:46 – Updated: 2022-05-14 01:46
VLAI
Details

The random() function of the smart contract implementation for CryptoSaga, an Ethereum game, generates a random value with publicly readable variables such as timestamp, the current block's blockhash, and a private variable (which can be read with a getStorageAt call). Therefore, attackers can precompute the random number and manipulate the game (e.g., get powerful characters or get critical damages).

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-12975"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-09-24T22:29:00Z",
    "severity": "HIGH"
  },
  "details": "The random() function of the smart contract implementation for CryptoSaga, an Ethereum game, generates a random value with publicly readable variables such as timestamp, the current block\u0027s blockhash, and a private variable (which can be read with a getStorageAt call). Therefore, attackers can precompute the random number and manipulate the game (e.g., get powerful characters or get critical damages).",
  "id": "GHSA-8cgr-4wgx-xqx4",
  "modified": "2022-05-14T01:46:48Z",
  "published": "2022-05-14T01:46:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-12975"
    },
    {
      "type": "WEB",
      "url": "https://medium.com/@jonghyk.song/create-legendary-champs-by-breaking-prng-of-cryptosaga-an-ethereum-rpg-game-cve-2018-12975-8de733ff8255"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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