{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-4540 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-4540 is a high-severity denial of service vulnerability in Daurnimator lua-http, published on 5 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-4540 and fix it if it is affected.\n\nWhat it is: CVE-2023-4540 is a high-severity denial of service vulnerability in Daurnimator lua-http, published on 5 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-4540 in the wild and no public exploit code.\n\nAffected product: Daurnimator lua-http. No package-level version data is available, so check the vendor advisory linked from the reference page.\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/CVE-2023-4540/ (Markdown: https://insights.sbomify.com/CVE-2023-4540/index.md)","id":"CVE-2023-4540","markdown":"https://insights.sbomify.com/CVE-2023-4540/index.md","name":"CVE-2023-4540","record":{"aliases":["DEBIAN-CVE-2023-4540","GHSA-947g-gmvh-r5rp","UBUNTU-CVE-2023-4540"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Lua HTTP library","requires_auth":"none","summary":"A crafted request triggers an infinite loop in the lua-http library, causing excessive allocation and denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[{"product":"lua-http","vendor":"daurnimator"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-755","name":"Improper Handling of Exceptional Conditions"}],"description":"Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. \nSuch a request causes the program to enter an infinite loop. \n\nThis issue affects lua-http: all versions before commit ddab283.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"DoS in lua-http library","id":"CVE-2023-4540","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"SQLi in Weens Admin Panel","id":"CVE-2023-4541"},"packages":[],"prev":{"headline":"Hardcoded password in Comarch ERP XL","id":"CVE-2023-4539"},"products":["lua-http"],"published":"2023-09-05","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-04","vendors":["Daurnimator"]},"summary":"A crafted request triggers an infinite loop in the lua-http library, causing excessive allocation and denial of service.","url":"https://insights.sbomify.com/CVE-2023-4540/"}