GHSA-pr39-8257-fxc2 Nervos CKB DoS: Process exists when p2p discovery protocol receives unsupported peer IP
Not scored
Published
Check this codebase for GHSA-pr39-8257-fxc2 and fix it if it is affected.
What it is: GHSA-pr39-8257-fxc2 is a denial of service vulnerability in ckb, published on 2 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-pr39-8257-fxc2 in the wild and no public exploit code.
Affected packages and fixed versions:
- ckb (crates.io): affected all versions; fixed in 0.34.0
- ckb (crates.io): affected all versions; fixed in 0.34.0
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/GHSA-pr39-8257-fxc2/ (Markdown: https://insights.sbomify.com/GHSA-pr39-8257-fxc2/index.md)
An attacker can crash the Nervos CKB node by sending an unsupported peer IP address via the p2p discovery protocol.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-pr39-8257-fxc2?
GHSA-pr39-8257-fxc2 is a denial of service vulnerability in ckb, published on 2 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The p2p discovery protocol assumes that the peer IP must be valid IPv4 address.
Which versions are affected by GHSA-pr39-8257-fxc2?
2 open source packages ship an affected version, including ckb.
| Package | Affected | Fixed in |
|---|---|---|
ckb crates.io | All versions | 0.34.0 |
ckb crates.io | All versions | 0.34.0 |
How do I fix GHSA-pr39-8257-fxc2?
Upgrade ckb to 0.34.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GHSA-pr39-8257-fxc2 being exploited?
There is no known exploitation of GHSA-pr39-8257-fxc2 in the wild and no public exploit code.