{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-40122 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-40122 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-40122 is a medium-severity denial of service vulnerability in Cisco Meeting Server, published on 21 Oct 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-2021-40122 and fix it if it is affected.\n\nWhat it is: CVE-2021-40122 is a medium-severity denial of service vulnerability in Cisco Meeting Server, published on 21 Oct 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-2021-40122 in the wild and no public exploit code.\n\nAffected product: Cisco Meeting Server. 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-2021-40122/ (Markdown: https://insights.sbomify.com/CVE-2021-40122/index.md)","id":"CVE-2021-40122","markdown":"https://insights.sbomify.com/CVE-2021-40122/index.md","name":"CVE-2021-40122","record":{"aliases":["GHSA-3rqh-cwpr-p993"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Meeting Server","requires_auth":"none","summary":"Unauthenticated remote attackers can cause a denial of service by sending large message series to the Call Bridge API, dropping ongoing calls.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"meeting_server","vendor":"cisco"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-404","name":"Improper Resource Shutdown or Release"},{"id":"CWE-399","name":null}],"description":"A vulnerability in an API of the Call Bridge feature of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper handling of large series of message requests. An attacker could exploit this vulnerability by sending a series of messages to the vulnerable API. A successful exploit could allow the attacker to cause the affected device to reload, dropping all ongoing calls and resulting in a DoS condition.","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":"Cisco Meeting Server Call Bridge Denial of Service Vulnerability","id":"CVE-2021-40122","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":"Cisco Identity Services Engine File Download Vulnerability","id":"CVE-2021-40123"},"packages":[],"prev":{"headline":"Cisco Identity Services Engine Cross-Site Scripting Vulnerabilities","id":"CVE-2021-40121"},"products":["Cisco Meeting Server"],"published":"2021-10-21","related":[{"cvss_score":9.8,"headline":"Memory corruption in Cisco Meeting Server before 2.0.3 and Acano Server before 1.9.5","id":"CVE-2016-6448","kev_date_added":null,"published":"2016-11-03"},{"cvss_score":9.1,"headline":"Misconfiguration in Cisco Meeting Server","id":"CVE-2017-12249","kev_date_added":null,"published":"2017-09-13"},{"cvss_score":9.1,"headline":"Auth bypass in Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6","id":"CVE-2016-6445","kev_date_added":null,"published":"2016-10-27"},{"cvss_score":8.8,"headline":"Cisco Meeting Server Cross-Site Request Forgery Vulnerability","id":"CVE-2018-0439","kev_date_added":null,"published":"2018-10-05"},{"cvss_score":8.8,"headline":"Cross-site request forgery in Cisco Meeting Server 1.8, 1.9, 2.0","id":"CVE-2016-6444","kev_date_added":null,"published":"2016-10-27"},{"cvss_score":8.1,"headline":"Misconfiguration in Cisco Meeting Server","id":"CVE-2018-0262","kev_date_added":null,"published":"2018-05-02"},{"cvss_score":8.1,"headline":"Information disclosure in Cisco Meeting Server","id":"CVE-2017-3837","kev_date_added":null,"published":"2017-02-22"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-11-07","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can cause a denial of service by sending large message series to the Call Bridge API, dropping ongoing calls.","url":"https://insights.sbomify.com/CVE-2021-40122/"}