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CVE-2023-39910

HIGH

7.5

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.17.5

SeveridadHIGH

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado8/9/2023

Ultima modificacion11/21/2024

Fuentenvd

Avistamientos honeypot0

Productos afectados

libbitcoin:libbitcoin_explorer

Debilidades (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)

Correlaciones IOC

Sin correlaciones registradas

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