{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-16843 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-16843 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-16843 is a medium-severity denial of service vulnerability in n/a, published on 4 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-16843 and fix it if it is affected.\n\nWhat it is: CVE-2020-16843 is a medium-severity denial of service vulnerability in n/a, published on 4 Aug 2020. 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-2020-16843 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-2020-16843/ (Markdown: https://insights.sbomify.com/CVE-2020-16843/index.md)","id":"CVE-2020-16843","markdown":"https://insights.sbomify.com/CVE-2020-16843/index.md","name":"CVE-2020-16843","record":{"aliases":["GHSA-mq2v-3xvx-978w"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Firecracker microVM","requires_auth":"none","summary":"Heavy ingress traffic can freeze the network stack, causing a denial of service in Firecracker microVMs.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"firecracker","vendor":"amazon"}],"cvss":{"score":5.9,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"In Firecracker 0.20.x before 0.20.1 and 0.21.x before 0.21.2, the network stack can freeze under heavy ingress traffic. This can result in a denial of service on the microVM when it is configured with a single network interface, and an availability problem for the microVM network interface on which the issue is triggered.","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-2020-16843","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":3,"next":{"headline":"Authorization bypass in Istio","id":"CVE-2020-16844"},"packages":[],"prev":{"headline":"Auth bypass in n/a","id":"CVE-2020-16839"},"products":["n/a"],"published":"2020-08-04","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-18960","kev_date_added":null,"published":"2019-12-11"},{"cvss_score":8.7,"headline":"Out-of-bounds Write in Firecracker virtio-pci Transport","id":"CVE-2026-5747","kev_date_added":null,"published":"2026-04-07"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2020-27174","kev_date_added":null,"published":"2020-10-16"},{"cvss_score":6,"headline":"Arbitrary Host File Overwrite via Symlink in Firecracker Jailer","id":"CVE-2026-1386","kev_date_added":null,"published":"2026-01-23"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Heavy ingress traffic can freeze the network stack, causing a denial of service in Firecracker microVMs.","url":"https://insights.sbomify.com/CVE-2020-16843/"}