{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2018-7833 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2018-7833 yet. Limit exposure of the affected software until one is available.","what":"CVE-2018-7833 is a high-severity denial of service vulnerability in Schneider Electric SE Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200, published on 17 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-7833 and fix it if it is affected.\n\nWhat it is: CVE-2018-7833 is a high-severity denial of service vulnerability in Schneider Electric SE Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200, published on 17 Dec 2018. 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-2018-7833 in the wild and no public exploit code.\n\nAffected product: Schneider Electric SE Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200. 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-2018-7833/ (Markdown: https://insights.sbomify.com/CVE-2018-7833/index.md)","id":"CVE-2018-7833","markdown":"https://insights.sbomify.com/CVE-2018-7833/index.md","name":"CVE-2018-7833","record":{"aliases":["GHSA-46rq-v233-vjx5"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Schneider Electric PLC","requires_auth":"none","summary":"Unauthenticated attackers can crash the embedded web server in Schneider Electric PLCs by sending specially crafted XML data.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"modicom_bmxnor0200h_firmware","vendor":"schneider-electric"},{"product":"modicom_m340_firmware","vendor":"schneider-electric"},{"product":"modicom_premium_firmware","vendor":"schneider-electric"},{"product":"modicom_quantum_firmware","vendor":"schneider-electric"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-754","name":"Improper Check for Unusual or Exceptional Conditions"}],"description":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Denial of service in Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200","id":"CVE-2018-7833","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2018"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site scripting in ConneXium Gateway, TSXETG100 - all versions","id":"CVE-2018-7834"},"packages":[],"prev":{"headline":"Code injection in Pro-Face GP-Pro EX v4.08 and previous versions","id":"CVE-2018-7832"},"products":["Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200"],"published":"2018-12-17","related":[{"cvss_score":9.8,"headline":"Auth bypass in Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200","id":"CVE-2018-7809","kev_date_added":null,"published":"2018-11-30"},{"cvss_score":9.8,"headline":"Auth bypass in Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200","id":"CVE-2018-7811","kev_date_added":null,"published":"2018-11-30"},{"cvss_score":8.8,"headline":"Cross-site scripting in Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200","id":"CVE-2018-7831","kev_date_added":null,"published":"2018-11-30"},{"cvss_score":7.5,"headline":"Information disclosure in Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200","id":"CVE-2018-7812","kev_date_added":null,"published":"2018-12-17"},{"cvss_score":7.5,"headline":"Other in Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200","id":"CVE-2018-7830","kev_date_added":null,"published":"2018-11-30"},{"cvss_score":6.1,"headline":"Open redirect in Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200","id":"CVE-2018-7804","kev_date_added":null,"published":"2018-12-17"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["Schneider Electric SE"]},"summary":"Unauthenticated attackers can crash the embedded web server in Schneider Electric PLCs by sending specially crafted XML data.","url":"https://insights.sbomify.com/CVE-2018-7833/"}