Medium severity5.9NVD Advisory· Published Aug 7, 2018· Updated Jun 17, 2026
CVE-2018-12885
CVE-2018-12885
Description
The randMod() function of the smart contract implementation for MyCryptoChamp, an Ethereum game, generates a random value with publicly readable variables such as the current block information and a private variable, (which can be read with a getStorageAt call). Therefore, attackers can get powerful champs/items and get rewards.
Affected products
2cpe:2.3:a:mycryptochamp:mycryptochamp:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mycryptochamp:mycryptochamp:-:*:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
3- medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8dfnvdExploitThird Party Advisory
- etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2DcnvdThird Party Advisory
- etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430nvdThird Party Advisory
News mentions
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