{"answers":{"affected":"2 open source packages ship an affected version, including ckb.","exploited":"There is no known exploitation of GHSA-84x2-2qv6-qg56 in the wild and no public exploit code.","fix":"Upgrade ckb to 0.34.0 or later.","what":"GHSA-84x2-2qv6-qg56 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."},"fix_prompt":"Check this codebase for GHSA-84x2-2qv6-qg56 and fix it if it is affected.\n\nWhat it is: GHSA-84x2-2qv6-qg56 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.\nExploitation: There is no known exploitation of GHSA-84x2-2qv6-qg56 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ckb (crates.io): affected all versions; fixed in 0.34.0\n- ckb (crates.io): affected all versions; fixed in 0.34.0\n\nTask:\n1. 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.\n2. 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.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/GHSA-84x2-2qv6-qg56/ (Markdown: https://insights.sbomify.com/GHSA-84x2-2qv6-qg56/index.md)","id":"GHSA-84x2-2qv6-qg56","markdown":"https://insights.sbomify.com/GHSA-84x2-2qv6-qg56/index.md","name":"GHSA-84x2-2qv6-qg56","record":{"aliases":[],"analysis":{"component_type":"server_software","fix_type":"configuration_change","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Nervos CKB node","requires_auth":"none","summary":"Attackers can cause denial of service on Nervos CKB nodes by flooding the P2P network with random transaction hashes due to missing rate limits.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"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 → ](https://github.com/nervosnetwork/ckb/blob/26e4837212c392c3c706a0da7a056131fb060433/sync/src/relayer/transactions_process.rs#L67).\n\nIt is easy to establish a DoS attach by generating random tx hashes.\n\n### Impact\n\nIt affects all nodes connected to the P2P network.\n\n### Workarounds\n\nApply rate limit on the data sent to CKB P2P port.","ecosystems":["crates.io"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"Nervos CKB P2P DoS Attacks","id":"GHSA-84x2-2qv6-qg56","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"denial_of_service","year":"2024"},"n_packages":2,"n_references":null,"packages":[{"ecosystem":"crates.io","fixed":["0.34.0"],"introduced":["0"],"last_affected":[],"package":"ckb","purl":null,"source":"GHSA-84x2-2qv6-qg56"},{"ecosystem":"crates.io","fixed":["0.34.0"],"introduced":["0"],"last_affected":[],"package":"ckb","purl":"pkg:cargo/ckb","source":"GHSA-84x2-2qv6-qg56"}],"products":null,"published":"2024-02-02","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"Attackers can cause denial of service on Nervos CKB nodes by flooding the P2P network with random transaction hashes due to missing rate limits.","url":"https://insights.sbomify.com/GHSA-84x2-2qv6-qg56/"}