CVE-2018-12975

Description

The random() function of the smart contract implementation for CryptoSaga, an Ethereum game, generates a random value with publicly readable variables such as timestamp, the current block's blockhash, and a private variable (which can be read with a getStorageAt call). Therefore, attackers can precompute the random number and manipulate the game (e.g., get powerful characters or get critical damages).

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.32%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://medium.com/%40jonghyk.song/create-legendary-champs-by-breaking-prng-of-cryptosaga-an-ethereum-rpg-game-cve-2018-12975-8de733ff8255

Frequently Asked Questions

What is the severity of CVE-2018-12975?
CVE-2018-12975 has been scored as a high severity vulnerability.
How to fix CVE-2018-12975?
To fix CVE-2018-12975, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12975 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-12975 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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