{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-31401 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-31401 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-31401 is a high-severity vulnerability in n/a, published on 19 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-2021-31401 and fix it if it is affected.\n\nWhat it is: CVE-2021-31401 is a high-severity vulnerability in n/a, published on 19 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-2021-31401 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-2021-31401/ (Markdown: https://insights.sbomify.com/CVE-2021-31401/index.md)","id":"CVE-2021-31401","markdown":"https://insights.sbomify.com/CVE-2021-31401/index.md","name":"CVE-2021-31401","record":{"aliases":["GHSA-jggm-qmcw-j5f5"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"InterNiche TCP stack","requires_auth":"none","summary":"A crafted IP packet causes an integer overflow in the TCP header processing, potentially leading to denial of service in InterNiche embedded systems.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"nichestack","vendor":"hcc-embedded"},{"product":"sentron_3wa_com190_firmware","vendor":"siemens"},{"product":"sentron_3wl_com35_firmware","vendor":"siemens"}],"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-20","name":"Improper Input Validation"}],"description":"An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing code doesn't sanitize the value of the IP total length field (header length + data length). With a crafted IP packet, an integer overflow occurs whenever the value of the IP data length is calculated by subtracting the length of the header from the total length of the IP packet.","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":"Integer overflow in n/a","id":"CVE-2021-31401","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"dio vulnerable to CRLF injection with HTTP method string","id":"CVE-2021-31402"},"packages":[],"prev":{"headline":"Denial of service in n/a","id":"CVE-2021-31400"},"products":["n/a"],"published":"2021-08-19","related":[{"cvss_score":9.1,"headline":"Weak cryptography in n/a","id":"CVE-2020-35685","kev_date_added":null,"published":"2021-08-19"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2020-35683","kev_date_added":null,"published":"2021-08-19"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2020-35684","kev_date_added":null,"published":"2021-08-19"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-27565","kev_date_added":null,"published":"2021-08-19"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2021-31227","kev_date_added":null,"published":"2021-08-19"},{"cvss_score":7.5,"headline":"Weak cryptography in n/a","id":"CVE-2021-31228","kev_date_added":null,"published":"2021-08-19"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-31400","kev_date_added":null,"published":"2021-08-19"}],"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":"2024-08-03","vendors":["n/a"]},"summary":"A crafted IP packet causes an integer overflow in the TCP header processing, potentially leading to denial of service in InterNiche embedded systems.","url":"https://insights.sbomify.com/CVE-2021-31401/"}