Summary
Nervos CKB P2P DoS Attacks
The P2P protocols lack of rate limit. For example, in relay protocol, when a node receives a broadcasted tx_hashes, it will mark it in memory to avoid duplicated requests. code → .
It is easy to establish a DoS attach by generating random tx hashes.
Workarounds
Apply rate limit on the data sent to CKB P2P port.
Impact
It affects all nodes connected to the P2P network.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Frequently Asked Questions
- What is GHSA-84X2-2QV6-QG56? GHSA-84X2-2QV6-QG56 is a critical-severity security vulnerability in ckb (rust), affecting versions < 0.34.0. It is fixed in 0.34.0.
- Which versions of ckb are affected by GHSA-84X2-2QV6-QG56? ckb (rust) versions < 0.34.0 is affected.
- Is there a fix for GHSA-84X2-2QV6-QG56? Yes. GHSA-84X2-2QV6-QG56 is fixed in 0.34.0. Upgrade to this version or later.
- Is GHSA-84X2-2QV6-QG56 exploitable, and should I be worried? Whether GHSA-84X2-2QV6-QG56 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-84X2-2QV6-QG56 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-84X2-2QV6-QG56? Upgrade
ckbto 0.34.0 or later.