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Vulnerability CVE-2018-14715
Published: 2018-08-03
| 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. |
Type:
CWE-338 (Use of Cryptographically Weak PRNG)
CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
5/10 |
2.9/10 |
10/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
No required |
| Confidentiality impact |
Integrity impact |
Availability impact |
Partial |
None |
None |
References: |
https://medium.com/@jonghyk.song/attack-on-pseudo-random-number-generator-prng-used-in-cryptogs-an-ethereum-cve-2018-14715-f63a51ac2eb9
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