{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23270 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-23270 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-23270 is a high-severity denial of service vulnerability in n/a, published on 12 Apr 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-2021-23270 and fix it if it is affected.\n\nWhat it is: CVE-2021-23270 is a high-severity denial of service vulnerability in n/a, published on 12 Apr 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-2021-23270 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-2021-23270/ (Markdown: https://insights.sbomify.com/CVE-2021-23270/index.md)","id":"CVE-2021-23270","markdown":"https://insights.sbomify.com/CVE-2021-23270/index.md","name":"CVE-2021-23270","record":{"aliases":["GHSA-wqw9-vmhv-jg2w"],"analysis":{"component_type":"operating_system","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Gargoyle OS","requires_auth":"none","summary":"An attacker can cause excessive network traffic and potential service disruption on Gargoyle OS devices by exploiting IPv6 routing loop conditions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"gargoyle","vendor":"gargoyle-router"}],"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-834","name":"Excessive Iteration"}],"description":"In Gargoyle OS 1.12.0, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Denial of service in n/a","id":"CVE-2021-23270","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":"TIBCO EBX Cross Site Scripting (XSS)","id":"CVE-2021-23271"},"packages":[],"prev":{"headline":"Improper Control of Dynamically-Managed Code Resources in Crafter Studio","id":"CVE-2021-23267"},"products":["n/a"],"published":"2021-04-12","related":[{"cvss_score":8.7,"headline":"Gargoyle 1.5.x Authenticated OS Command Execution via run_commands.sh","id":"CVE-2015-10145","kev_date_added":null,"published":"2025-12-31"}],"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":"An attacker can cause excessive network traffic and potential service disruption on Gargoyle OS devices by exploiting IPv6 routing loop conditions.","url":"https://insights.sbomify.com/CVE-2021-23270/"}