CVE-2018-12056

Description

The maxRandom function of a smart contract implementation for All For One, an Ethereum gambling game, generates a random value with publicly readable variables because the _seed value can be retrieved with a getStorageAt call. Therefore, it allows attackers to always win and get rewards.

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/to-be-a-winner-of-ethereum-gambling-game-all-for-one-by-breaking-prng-1ab011163d40
https://lists.apache.org/thread.html/a62aa2706105d68f1c02023fe24aaa3c13b4d8a1826181fed07d9682%40%3Cnotifications.zookeeper.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2018-12056?
CVE-2018-12056 has been scored as a high severity vulnerability.
How to fix CVE-2018-12056?
To fix CVE-2018-12056, 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-2018-12056 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-12056 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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