Improper Verification of Cryptographic Signature Affecting nano-id package, versions <0.4.0

Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature through the nano_id::base62 and nano_id::base58 functions. An attacker can predict generated IDs and potentially perform brute-force attacks by exploiting the reduced entropy of these IDs.

Note

nano_id::base64 is not affected by this vulnerability.

use std::collections::BTreeSet;

fn main() {
    test_base58();
    test_base62();
}

fn test_base58() {
    let mut produced_symbols = BTreeSet::new();

    for _ in 0..100_000 {
        let id = nano_id::base58::<10>();
        for c in id.chars() {
            produced_symbols.insert(c);
        }
    }

    println!(
        "{} symbols generated from nano_id::base58",
        produced_symbols.len()
    );
}

fn test_base62() {
    let mut produced_symbols = BTreeSet::new();

    for _ in 0..100_000 {
        let id = nano_id::base62::<10>();
        for c in id.chars() {
            produced_symbols.insert(c);
        }
    }

    println!(
        "{} symbols generated from nano_id::base62",
        produced_symbols.len()
    );
}

• GitHub Commit
• RustSec Advisory