{"answers":{"affected":"2 open source packages ship an affected version, including ckb.","exploited":"There is no known exploitation of GHSA-j35p-q24r-5367 in the wild and no public exploit code.","fix":"Upgrade ckb to 0.43.1 or later.","what":"GHSA-j35p-q24r-5367 is a denial of service vulnerability in ckb, published on 22 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-j35p-q24r-5367 and fix it if it is affected.\n\nWhat it is: GHSA-j35p-q24r-5367 is a denial of service vulnerability in ckb, published on 22 Apr 2022. 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-j35p-q24r-5367 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ckb (crates.io): affected all versions; fixed in 0.43.1\n- ckb (crates.io): affected all versions; fixed in 0.43.1\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-j35p-q24r-5367/ (Markdown: https://insights.sbomify.com/GHSA-j35p-q24r-5367/index.md)","id":"GHSA-j35p-q24r-5367","markdown":"https://insights.sbomify.com/GHSA-j35p-q24r-5367/index.md","name":"GHSA-j35p-q24r-5367","record":{"aliases":[],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"CKB blockchain node","requires_auth":"none","summary":"Remote attackers can exhaust memory in CKB nodes by sending transactions with duplicate outpoints, causing denial of service.","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":"### Impact\nA remote attacker could exploit this vulnerability to exhaust ckb process memory of an affected node.\n\n### Patches\nUpgrade to 0.43.1 or later.\n\n### References\nAfter resolving the outpoints of one dep group, we put the corresponding content into a vec ( https://github.com/nervosnetwork/ckb/blob/v0.42.0/util/types/src/core/cell.rs#L600-L617 ), there is a vulnerability to a memory dos attack because there is no determination of whether the outpoints is duplicated.\n\nPoC:\n```\nbefore send dos tx rss:\n105700\n\nafter rss:\n2306932\n```\n\nDoS cost: 25.6 KB * 150 + dep_tx out_points capacity ( 36 * 150 * 100 = 540000 ) = 4380000 CKB\nSend 50 dos_tx, memory exhausted: (25.6 KB * 150  * 100) * 50 = 19.2 GB","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":"Dep Group Remote Memory Exhaustion (Denial of Service) in ckb","id":"GHSA-j35p-q24r-5367","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"denial_of_service","year":"2022"},"n_packages":2,"n_references":null,"packages":[{"ecosystem":"crates.io","fixed":["0.43.1"],"introduced":["0"],"last_affected":[],"package":"ckb","purl":null,"source":"GHSA-j35p-q24r-5367"},{"ecosystem":"crates.io","fixed":["0.43.1"],"introduced":["0"],"last_affected":[],"package":"ckb","purl":"pkg:cargo/ckb","source":"GHSA-j35p-q24r-5367"}],"products":null,"published":"2022-04-22","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":"Remote attackers can exhaust memory in CKB nodes by sending transactions with duplicate outpoints, causing denial of service.","url":"https://insights.sbomify.com/GHSA-j35p-q24r-5367/"}