CVE-2018-14715 - The endCoinFlip function and throwSlammer function of the smart contract implementations for Cryptog

CVE-2018-14715

Summary

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.

References

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

Vulnerable Configurations

cpe:2.3:a:cryptogs:cryptogs:-:*:*:*:*:*:*:*
cpe:2.3:a:cryptogs:cryptogs:-:*:*:*:*:*:*:*

CVSS

Base:	5.0 (as of 02-10-2018 - 19:30)
Impact:
Exploitability:

CWE

CWE-338

CAPEC

Access

Vector	Complexity	Authentication
NETWORK	LOW	NONE

Impact

Confidentiality	Integrity	Availability
PARTIAL	NONE	NONE

cvss-vector via4

AV:N/AC:L/Au:N/C:P/I:N/A:N

refmap via4

misc

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

Last major update

02-10-2018 - 19:30

Published

03-08-2018 - 18:29

Last modified

02-10-2018 - 19:30