What is CVE-2018-12454?

CVE-2018-12454 is a high-severity vulnerability in 1000guess 1000 Guess, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 7.5/10. Published 2018-06-17.

How severe is CVE-2018-12454?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2018-12454 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in 1000guess 1000 Guess

CVE-2018-12454

The _addguess function of a simplelottery smart contract implementation for 1000 Guess, an Ethereum gambling 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, it allows attackers to always win and get rewards.

EPSS: 0.013 (66.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

1000guess 1000_guess
N/a — versions n/a

Weakness classification (CWE)

CWE-338 — Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC)

Frequently asked questions

What is CVE-2018-12454?: CVE-2018-12454 is a high-severity vulnerability in 1000guess 1000 Guess, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 7.5/10. Published 2018-06-17.
How severe is CVE-2018-12454?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-12454 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.