CVE-2023-39910
Vulnerability from cvelistv5
Published
2023-08-09 00:00
Modified
2024-10-10 18:10
Severity ?
Summary
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.
References
cve@mitre.orghttps://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/commands/seed.cpp#L44Third Party Advisory
cve@mitre.orghttps://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/utility.cpp#L78Third Party Advisory
cve@mitre.orghttps://github.com/libbitcoin/libbitcoin-explorer/wiki/CVE-2023-39910
cve@mitre.orghttps://github.com/libbitcoin/libbitcoin-system/blob/a1b777fc51d9c04e0c7a1dec5cc746b82a6afe64/src/crypto/pseudo_random.cpp#L66C12-L78Third Party Advisory
cve@mitre.orghttps://milksad.info/disclosure.htmlThird Party Advisory
cve@mitre.orghttps://news.ycombinator.com/item?id=37054862Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/commands/seed.cpp#L44Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/libbitcoin/libbitcoin-explorer/blob/20eba4db9a8a3476949d6fd08a589abda7fde3e3/src/utility.cpp#L78Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/libbitcoin/libbitcoin-explorer/wiki/CVE-2023-39910
af854a3a-2127-422b-91ae-364da2661108https://github.com/libbitcoin/libbitcoin-system/blob/a1b777fc51d9c04e0c7a1dec5cc746b82a6afe64/src/crypto/pseudo_random.cpp#L66C12-L78Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://milksad.info/disclosure.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://news.ycombinator.com/item?id=37054862Third Party Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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