{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2022-43501 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2022-43501 yet. Limit exposure of the affected software until one is available.","what":"CVE-2022-43501 is a critical vulnerability in ZUKEN Elmic Kasago IPv4, published on 10 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-43501 and fix it if it is affected.\n\nWhat it is: CVE-2022-43501 is a critical vulnerability in ZUKEN Elmic Kasago IPv4, published on 10 Feb 2023. 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-2022-43501 in the wild and no public exploit code.\n\nAffected product: ZUKEN Elmic Kasago IPv4. 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-2022-43501/ (Markdown: https://insights.sbomify.com/CVE-2022-43501/index.md)","id":"CVE-2022-43501","markdown":"https://insights.sbomify.com/CVE-2022-43501/index.md","name":"CVE-2022-43501","record":{"aliases":["GHSA-96qq-9h7m-67pw"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["account_takeover","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"KASAGO TCP/IP stack","requires_auth":"none","summary":"Attackers can predict TCP Initial Sequence Numbers to hijack connections or spoof traffic in KASAGO TCP/IP stacks.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"kasago_ipv4","vendor":"elwsc"},{"product":"kasago_ipv4_light","vendor":"elwsc"},{"product":"kasago_ipv6\\/v4_dual","vendor":"elwsc"},{"product":"kasago_mobile_ipv6","vendor":"elwsc"}],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-330","name":"Use of Insufficiently Random Values"}],"description":"KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones.","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":"Weak cryptography in Kasago IPv4","id":"CVE-2022-43501","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"weak_cryptography","year":"2022"},"n_packages":0,"n_references":2,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority because it is Unused","id":"CVE-2022-43502"},"packages":[],"prev":{"headline":"Cross-site scripting in WordPress","id":"CVE-2022-43500"},"products":["Kasago IPv4","Kasago IPv4 Light","Kasago IPv6/v4 Dual","Kasago mobile IPv6"],"published":"2023-02-10","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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-03-24","vendors":["ZUKEN Elmic"]},"summary":"Attackers can predict TCP Initial Sequence Numbers to hijack connections or spoof traffic in KASAGO TCP/IP stacks.","url":"https://insights.sbomify.com/CVE-2022-43501/"}