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CVE-2023-39910
HIGH7.5
Description
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.
Details CVE
Score CVSS v3.17.5
SeveriteHIGH
Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vecteur d'attaqueNETWORK
ComplexiteLOW
Privileges requisNONE
Interaction utilisateurNONE
Publie8/9/2023
Derniere modification11/21/2024
Sourcenvd
Observations honeypot0
Produits affectes
libbitcoin:libbitcoin_explorer
Faiblesses (CWE)
CWE-338
References
https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/commands/seed.cpp#L44(cve@mitre.org)
https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/utility.cpp#L78(cve@mitre.org)
https://github.com/libbitcoin/libbitcoin-system/blob/a1b777fc51d9c04e0c7a1dec5cc746b82a6afe64/src/crypto/pseudo_random.cpp#L66C12-L78(cve@mitre.org)
https://milksad.info/disclosure.html(cve@mitre.org)
https://news.ycombinator.com/item?id=37054862(cve@mitre.org)
https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/commands/seed.cpp#L44(af854a3a-2127-422b-91ae-364da2661108)
https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/utility.cpp#L78(af854a3a-2127-422b-91ae-364da2661108)
https://github.com/libbitcoin/libbitcoin-explorer/wiki/CVE-2023-39910(af854a3a-2127-422b-91ae-364da2661108)
https://github.com/libbitcoin/libbitcoin-system/blob/a1b777fc51d9c04e0c7a1dec5cc746b82a6afe64/src/crypto/pseudo_random.cpp#L66C12-L78(af854a3a-2127-422b-91ae-364da2661108)
https://milksad.info/disclosure.html(af854a3a-2127-422b-91ae-364da2661108)
https://news.ycombinator.com/item?id=37054862(af854a3a-2127-422b-91ae-364da2661108)
Correlations IOC
Aucune correlation enregistree
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