Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
CVE-2018-12885 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2Dc | CVE | Third Party Advisory |
| https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430 | CVE | Third Party Advisory |
| https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8df | CVE | ExploitThird Party Advisory |
| https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2Dc | [email protected] | Third Party Advisory |
| https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430 | [email protected] | Third Party Advisory |
| https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8df | [email protected] | ExploitThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-338 | Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mycryptochamp mycryptochamp | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Oct 18, 2018 | Initial Analysis | [email protected] |