{"answers":{"affected":"It affects 13 products.","exploited":"There is no known exploitation of CVE-2018-7838 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2018-7838 yet. Limit exposure of the affected software until one is available.","what":"CVE-2018-7838 is a high-severity denial of service vulnerability in Modicon M580 CPU - BMEP582040 all versions before V2.90 and Modicon Ethernet Module BMENOC0301 all versions before V2.16, published on 15 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-7838 and fix it if it is affected.\n\nWhat it is: CVE-2018-7838 is a high-severity denial of service vulnerability in Modicon M580 CPU - BMEP582040 all versions before V2.90 and Modicon Ethernet Module BMENOC0301 all versions before V2.16, published on 15 Jul 2019. 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-2018-7838 in the wild and no public exploit code.\n\nAffected product: Modicon M580 CPU - BMEP582040 all versions before V2.90 and Modicon Ethernet Module BMENOC0301 all versions before V2.16. 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-2018-7838/ (Markdown: https://insights.sbomify.com/CVE-2018-7838/index.md)","id":"CVE-2018-7838","markdown":"https://insights.sbomify.com/CVE-2018-7838/index.md","name":"CVE-2018-7838","record":{"aliases":["GHSA-9v86-72g4-pvjh"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Modicon PLC","requires_auth":"none","summary":"A buffer error in Modicon M580 CPUs and Ethernet modules allows remote attackers to cause a denial of service on the FTP service via a long CWD command.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"bmeh582040_firmware","vendor":"schneider-electric"},{"product":"bmeh586040_firmware","vendor":"schneider-electric"},{"product":"bmenoc0301_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep581020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep582020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep582040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep582040s_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep583020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep583040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep584020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep584040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep585040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep586040_firmware","vendor":"schneider-electric"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","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-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A CWE-119 Buffer Errors vulnerability exists in Modicon M580 CPU - BMEP582040, all versions before V2.90, and Modicon Ethernet Module BMENOC0301, all versions before V2.16, which could cause denial of service on the FTP service of the controller or the Ethernet BMENOC module when it receives a FTP CWD command with a data length greater than 1020 bytes. A power cycle is then needed to reactivate the FTP service.","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 Modicon M580 CPU - BMEP582040 all versions before V2.90 and Modicon Ethernet Module BMENOC0301 all versions before V2.16","id":"CVE-2018-7838","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":"Weak cryptography in IIoT Monitor 3.1.38","id":"CVE-2018-7839"},"packages":[],"prev":{"headline":"XML external entity in IIoT Monitor 3.1.38","id":"CVE-2018-7837"},"products":["Modicon M580 CPU - BMEP582040 all versions before V2.90 and Modicon Ethernet Module BMENOC0301 all versions before V2.16"],"published":"2019-07-15","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["Modicon"]},"summary":"A buffer error in Modicon M580 CPUs and Ethernet modules allows remote attackers to cause a denial of service on the FTP service via a long CWD command.","url":"https://insights.sbomify.com/CVE-2018-7838/"}