{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-31400 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-31400 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-31400 is a high-severity denial of service 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-2021-31400 and fix it if it is affected.\n\nWhat it is: CVE-2021-31400 is a high-severity denial of service 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-2021-31400 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-2021-31400/ (Markdown: https://insights.sbomify.com/CVE-2021-31400/index.md)","id":"CVE-2021-31400","markdown":"https://insights.sbomify.com/CVE-2021-31400/index.md","name":"CVE-2021-31400","record":{"aliases":["GHSA-h52p-pmhh-x2jv"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"TCP/IP stack library","requires_auth":"none","summary":"A flaw in the TCP out-of-band data processing allows remote attackers to cause a denial of service via infinite loop or device reset.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"nichestack","vendor":"hcc-embedded"}],"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":"An issue was discovered in tcp_pulloutofband() in tcp_in.c in HCC embedded InterNiche 4.0.1. The TCP out-of-band urgent-data processing function invokes a panic function if the pointer to the end of the out-of-band data points outside of the TCP segment's data. If the panic function hadn't a trap invocation removed, it will enter an infinite loop and therefore cause DoS (continuous loop or a device reset).","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-2021-31400","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Integer overflow in n/a","id":"CVE-2021-31401"},"packages":[],"prev":{"headline":"Security feature bypass in n/a","id":"CVE-2021-31399"},"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"}],"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 flaw in the TCP out-of-band data processing allows remote attackers to cause a denial of service via infinite loop or device reset.","url":"https://insights.sbomify.com/CVE-2021-31400/"}