Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.
Published 2022-12-27 22:15:12
Updated 2023-01-05 04:43:07
Source Go Project
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-4238

0.19%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-4238

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.1
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.9
5.2
NIST

CWE ids for CVE-2021-4238

  • The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-4238

Products affected by CVE-2021-4238

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