CVE-2023-39910
HIGH EXPLOITED IN THE WILDLibbitcoin Explorer <3.6.0 - Info Disclosure
Title source: llmDescription
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.
Exploits (5)
References (6)
Scores
CVSS v3
7.5
EPSS
0.0043
EPSS Percentile
62.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
VulnCheck KEV
2023-08-08
InTheWild.io
2023-08-09
CWE
CWE-338
Status
published
Products (1)
libbitcoin/libbitcoin_explorer
3.0.0 - 3.6.0
Published
Aug 09, 2023
Tracked Since
Feb 18, 2026