CVE-2021-45699
7.5 · HIGHOverview
CVE-2021-45699 is a high-severity vulnerability affecting nervos ckb. It was published on December 27, 2021 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
An issue was discovered in the ckb crate before 0.40.0 for Rust. Remote attackers may be able to conduct a 51% attack against the Nervos CKB blockchain by triggering an inability to allocate memory for the misbehavior HashMap.
Remediation
Check the references section for vendor advisories and patches from nervos. Update ckb 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 |
|---|---|---|---|
| nervos | ckb | >= 0, < 0.40.0 | Affected |
Frequently Asked Questions
What is CVE-2021-45699?
CVE-2021-45699 is a high-severity vulnerability affecting nervos ckb. It was published on December 27, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-45699?
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-2021-45699?
Check the references section for vendor advisories and patches from nervos. Update ckb 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-2021-45699?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-45699 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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