{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2018-4853 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2018-4853 yet. Limit exposure of the affected software until one is available.","what":"CVE-2018-4853 is a critical missing authorization vulnerability in Siemens AG SICLOCK TC100, SICLOCK TC400, published on 3 Jul 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-2018-4853 and fix it if it is affected.\n\nWhat it is: CVE-2018-4853 is a critical missing authorization vulnerability in Siemens AG SICLOCK TC100, SICLOCK TC400, published on 3 Jul 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-2018-4853 in the wild and no public exploit code.\n\nAffected product: Siemens AG SICLOCK TC100, SICLOCK TC400. 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-2018-4853/ (Markdown: https://insights.sbomify.com/CVE-2018-4853/index.md)","id":"CVE-2018-4853","markdown":"https://insights.sbomify.com/CVE-2018-4853/index.md","name":"CVE-2018-4853","record":{"aliases":["GHSA-hf7w-q4jc-hxp5"],"analysis":{"component_type":"iot_embedded","fix_type":"no_fix_stated","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"SICLOCK time server","requires_auth":"none","summary":"An attacker with network access can modify the firmware of SICLOCK TC100 and TC400 devices due to missing authentication on the TFTP service.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[{"product":"siclock_tc100_firmware","vendor":"siemens"},{"product":"siclock_tc400_firmware","vendor":"siemens"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.","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":"Missing authorization in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4853","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2018"},"n_packages":0,"n_references":2,"next":{"headline":"Missing authorization in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4854"},"packages":[],"prev":{"headline":"Auth bypass in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4852"},"products":["SICLOCK TC100, SICLOCK TC400"],"published":"2018-07-03","related":[{"cvss_score":9.8,"headline":"Auth bypass in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4852","kev_date_added":null,"published":"2018-07-03"},{"cvss_score":8.8,"headline":"Missing authorization in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4854","kev_date_added":null,"published":"2018-07-03"},{"cvss_score":8.2,"headline":"Denial of service in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4851","kev_date_added":null,"published":"2018-07-03"},{"cvss_score":6.5,"headline":"Information disclosure in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4855","kev_date_added":null,"published":"2018-07-03"},{"cvss_score":4.9,"headline":"Auth bypass in SICLOCK TC100, SICLOCK TC400","id":"CVE-2018-4856","kev_date_added":null,"published":"2018-07-03"}],"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":"2024-09-16","vendors":["Siemens AG"]},"summary":"An attacker with network access can modify the firmware of SICLOCK TC100 and TC400 devices due to missing authentication on the TFTP service.","url":"https://insights.sbomify.com/CVE-2018-4853/"}