CVE-2021-4238: GoUtils's randomly-generated alphanumeric strings contain significantly less entropy than expected

December 28, 2022 (updated December 30, 2022)

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.

References

github.com/Masterminds/goutils/commit/869801f20f9f1e7ecdbdb6422049d8241270d5e1
github.com/advisories/GHSA-3839-6r69-m497
nvd.nist.gov/vuln/detail/CVE-2021-4238
pkg.go.dev/vuln/GO-2022-0411

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