{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-5420 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-5420 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-5420 is a high-severity denial of service vulnerability in Cloud Foundry CF Deployment, published on 3 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-5420 and fix it if it is affected.\n\nWhat it is: CVE-2020-5420 is a high-severity denial of service vulnerability in Cloud Foundry CF Deployment, published on 3 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-5420 in the wild and no public exploit code.\n\nAffected product: Cloud Foundry CF Deployment. 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-2020-5420/ (Markdown: https://insights.sbomify.com/CVE-2020-5420/index.md)","id":"CVE-2020-5420","markdown":"https://insights.sbomify.com/CVE-2020-5420/index.md","name":"CVE-2020-5420","record":{"aliases":["GHSA-jf63-p3cp-7qf7"],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cloud Foundry Gorouter","requires_auth":"low_privilege","summary":"A malicious developer can crash Cloud Foundry Gorouters by pushing an app with crafted HTTP responses, causing cluster-wide denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"pivotal","cpe":[{"product":"cf-deployment","vendor":"cloudfoundry"},{"product":"gorouter","vendor":"cloudfoundry"}],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-754","name":"Improper Check for Unusual or Exceptional Conditions"}],"description":"Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with \"cf push\" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.","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":"Gorouter is vulnerable to DoS attack via invalid HTTP responses","id":"CVE-2020-5420","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"RFD Protection Bypass via jsessionid","id":"CVE-2020-5421"},"packages":[],"prev":{"headline":"RabbitMQ arbitrary code execution using local binary planting","id":"CVE-2020-5419"},"products":["CF Deployment","Routing"],"published":"2020-09-03","related":[{"cvss_score":9.1,"headline":"Auth bypass in Cloud Foundry Diego and CF Deployment","id":"CVE-2022-31733","kev_date_added":null,"published":"2023-02-03"},{"cvss_score":8.8,"headline":"UAA fails to check the state parameter when authenticating with external IDPs","id":"CVE-2020-5402","kev_date_added":null,"published":"2020-02-27"},{"cvss_score":8.8,"headline":"UAA logs all query parameters with debug logging level","id":"CVE-2019-11293","kev_date_added":null,"published":"2019-12-06"},{"cvss_score":8.8,"headline":"Cloud Foundry UAA logs query parameters in tomcat access file","id":"CVE-2019-11290","kev_date_added":null,"published":"2019-11-25"},{"cvss_score":8.8,"headline":"Password leak in smbdriver logs","id":"CVE-2019-11283","kev_date_added":null,"published":"2019-10-23"},{"cvss_score":8.8,"headline":"Information disclosure in Garden-runC","id":"CVE-2018-1191","kev_date_added":null,"published":"2018-03-29"},{"cvss_score":8.7,"headline":"Java Projects using HTTP to fetch dependencies","id":"CVE-2019-3801","kev_date_added":null,"published":"2019-04-25"}],"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":"2024-09-17","vendors":["Cloud Foundry"]},"summary":"A malicious developer can crash Cloud Foundry Gorouters by pushing an app with crafted HTTP responses, causing cluster-wide denial of service.","url":"https://insights.sbomify.com/CVE-2020-5420/"}