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CVE-2023-39910

HIGH

7.5

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.17.5

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado8/9/2023

Ultima modificacao11/21/2024

Fontenvd

Avistamentos honeypot0

Produtos afetados

libbitcoin:libbitcoin_explorer

Fraquezas (CWE)

CWE-338

Referencias

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-explorer/wiki/CVE-2023-39910(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)

Correlacoes IOC

Sem correlacoes registradas

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