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CVE-2023-39910

HIGH

7.5

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung7.5

SchweregradHIGH

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht8/9/2023

Zuletzt geandert11/21/2024

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

libbitcoin:libbitcoin_explorer

Schwachen (CWE)

CWE-338

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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