{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-43338 exists.","fix":"No fix has been published for CVE-2023-43338 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-43338 is a critical memory corruption vulnerability in Cesanta Mjs, published on 22 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-2023-43338 and fix it if it is affected.\n\nWhat it is: CVE-2023-43338 is a critical memory corruption vulnerability in Cesanta Mjs, published on 22 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-43338 exists.\n\nAffected product: Cesanta Mjs. 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-2023-43338/ (Markdown: https://insights.sbomify.com/CVE-2023-43338/index.md)","id":"CVE-2023-43338","markdown":"https://insights.sbomify.com/CVE-2023-43338/index.md","name":"CVE-2023-43338","record":{"aliases":["GHSA-92m7-86f6-r2hj"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Cesanta mjs library","requires_auth":"none","summary":"Attackers can execute arbitrary code via crafted input due to a function pointer hijacking vulnerability in the Cesanta mjs library.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"mjs","vendor":"cesanta"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"Cesanta mjs v2.20.0 was discovered to contain a function pointer hijacking vulnerability via the function mjs_get_ptr(). This vulnerability allows attackers to execute arbitrary code via a crafted input.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Memory corruption in n/a","id":"CVE-2023-43338","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cesanta:mjs","products":["cesanta:mjs"],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2023-43339"},"packages":[],"prev":{"headline":"Missing authorization in n/a","id":"CVE-2023-43336"},"products":["n/a"],"published":"2023-09-22","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2023-50044","kev_date_added":null,"published":"2023-12-20"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2021-46509","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46513","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46518","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46519","kev_date_added":null,"published":"2022-01-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-46520","kev_date_added":null,"published":"2022-01-27"}],"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-09-24","vendors":["n/a"]},"summary":"Attackers can execute arbitrary code via crafted input due to a function pointer hijacking vulnerability in the Cesanta mjs library.","url":"https://insights.sbomify.com/CVE-2023-43338/"}