{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-34746 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-34746 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-34746 is a critical authentication bypass vulnerability in Cisco Enterprise NFV Infrastructure Software, published on 2 Sep 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-2021-34746 and fix it if it is affected.\n\nWhat it is: CVE-2021-34746 is a critical authentication bypass vulnerability in Cisco Enterprise NFV Infrastructure Software, published on 2 Sep 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-2021-34746 in the wild and no public exploit code.\n\nAffected product: Cisco Enterprise NFV Infrastructure Software. 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-2021-34746/ (Markdown: https://insights.sbomify.com/CVE-2021-34746/index.md)","id":"CVE-2021-34746","markdown":"https://insights.sbomify.com/CVE-2021-34746/index.md","name":"CVE-2021-34746","record":{"aliases":["GHSA-hjrv-6xv3-c6x3"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"NFV Infrastructure Software","requires_auth":"none","summary":"Unauthenticated remote attackers can bypass authentication to log in as administrator on Cisco NFVIS devices due to input validation flaws.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"enterprise_nfv_infrastructure_software","vendor":"cisco"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"},{"id":"CWE-289","name":"Authentication Bypass by Alternate Name"}],"description":"A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.","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 Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability","id":"CVE-2021-34746","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Cisco Intersight Virtual Appliance Command Injection Vulnerability","id":"CVE-2021-34748"},"packages":[],"prev":{"headline":"AppDynamics .NET Agent Privilege Escalation Vulnerability","id":"CVE-2021-34745"},"products":["Cisco Enterprise NFV Infrastructure Software"],"published":"2021-09-02","related":[{"cvss_score":9.9,"headline":"Cisco Enterprise NFV Infrastructure Software Vulnerabilities","id":"CVE-2022-20777","kev_date_added":null,"published":"2022-05-04"},{"cvss_score":9.9,"headline":"Cisco Enterprise NFV Infrastructure Software Vulnerabilities","id":"CVE-2022-20779","kev_date_added":null,"published":"2022-05-04"},{"cvss_score":9.9,"headline":"Cisco Enterprise NFV Infrastructure Software Vulnerabilities","id":"CVE-2022-20780","kev_date_added":null,"published":"2022-05-04"},{"cvss_score":9.8,"headline":"Cisco Integrated Management Controller Multiple Remote Code Execution Vulnerabilities","id":"CVE-2020-3470","kev_date_added":null,"published":"2020-11-18"},{"cvss_score":9.8,"headline":"Cisco Enterprise NFV Infrastructure Software VNC Authentication Bypass Vulnerability","id":"CVE-2019-1895","kev_date_added":null,"published":"2019-08-07"},{"cvss_score":8.8,"headline":"Command injection in Cisco Enterprise NFV Infrastructure Software","id":"CVE-2018-0279","kev_date_added":null,"published":"2018-05-17"}],"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":"2024-11-07","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can bypass authentication to log in as administrator on Cisco NFVIS devices due to input validation flaws.","url":"https://insights.sbomify.com/CVE-2021-34746/"}