{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-38387 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-38387 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-38387 is a high-severity denial of service vulnerability in n/a, published on 10 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-38387 and fix it if it is affected.\n\nWhat it is: CVE-2021-38387 is a high-severity denial of service vulnerability in n/a, published on 10 Aug 2021. 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-2021-38387 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-38387/ (Markdown: https://insights.sbomify.com/CVE-2021-38387/index.md)","id":"CVE-2021-38387","markdown":"https://insights.sbomify.com/CVE-2021-38387/index.md","name":"CVE-2021-38387","record":{"aliases":["GHSA-mh86-qhjh-fvr5"],"analysis":{"component_type":"iot_embedded","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Contiki OS","requires_auth":"none","summary":"A Telnet server flaw in Contiki causes clients to enter infinite loops, leading to excessive CPU consumption and denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"contiki","vendor":"contiki-os"}],"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-835","name":"Loop with Unreachable Exit Condition"}],"description":"In Contiki 3.0, a Telnet server that silently quits (before disconnection with clients) leads to connected clients entering an infinite loop and waiting forever, which may cause excessive CPU consumption.","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 n/a","id":"CVE-2021-38387","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Privilege escalation in Central Dogma","id":"CVE-2021-38388"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-38386"},"products":["n/a"],"published":"2021-08-10","related":[{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-40523","kev_date_added":null,"published":"2021-09-05"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2021-38386","kev_date_added":null,"published":"2021-08-10"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-38311","kev_date_added":null,"published":"2021-08-09"},{"cvss_score":7.5,"headline":"Integer overflow in n/a","id":"CVE-2021-28362","kev_date_added":null,"published":"2021-03-24"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2020-13984","kev_date_added":null,"published":"2020-12-11"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2020-13985","kev_date_added":null,"published":"2020-12-11"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"A Telnet server flaw in Contiki causes clients to enter infinite loops, leading to excessive CPU consumption and denial of service.","url":"https://insights.sbomify.com/CVE-2021-38387/"}