CVE-2023-39910

Katalog CVE

CVSS 7.5 · High EPSS 1,8%

Kerentanan Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) pada libbitcoin explorer. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

The cryptocurrency wallet entropy seeding mechanism used in Libbitcoin Explorer 3.0.0 through 3.6.0 is weak, aka the Milk Sad issue. The use of an mt19937 Mersenne Twister PRNG restricts the internal entropy to 32 bits regardless of settings. This allows remote attackers to recover any wallet private keys generated from "bx seed" entropy output and steal funds. (Affected users need to move funds to a secure new cryptocurrency wallet.) NOTE: the vendor's position is that there was sufficient documentation advising against "bx seed" but others disagree. NOTE: this was exploited in the wild in June and July 2023.

Rincian

Terbit di NVD

9 Agustus 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

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

EPSS (30 hari)

1,8% peluang dieksploitasi; lebih tinggi dari 77,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/commands/s... advisory pihak ketiga
• https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/utility.cp... advisory pihak ketiga
• https://github.com/libbitcoin/libbitcoin-system/blob/a1b777fc51d9c04e0c7a1dec5cc746b82a6afe64/src/crypto/pseud... advisory pihak ketiga
• https://milksad.info/disclosure.html advisory pihak ketiga
• https://news.ycombinator.com/item?id=37054862 advisory pihak ketiga
• https://github.com/libbitcoin/libbitcoin-explorer/wiki/CVE-2023-39910