CVE-2023-39910
7.5 · HIGHOverview
CVE-2023-39910 is a high-severity vulnerability affecting libbitcoin libbitcoin_explorer. It was published on August 9, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from libbitcoin. Update libbitcoin_explorer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libbitcoin | libbitcoin_explorer | 3.0.0 | Affected |
References
Frequently Asked Questions
What is CVE-2023-39910?
CVE-2023-39910 is a high-severity vulnerability affecting libbitcoin libbitcoin_explorer. It was published on August 9, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2023-39910?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-39910?
Check the references section for vendor advisories and patches from libbitcoin. Update libbitcoin_explorer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-39910?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-39910 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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