{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-1134 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-1134 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-1134 is a high-severity vulnerability in Cisco Digital Network Architecture Center (DNA Center), published on 29 Jun 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-2021-1134 and fix it if it is affected.\n\nWhat it is: CVE-2021-1134 is a high-severity vulnerability in Cisco Digital Network Architecture Center (DNA Center), published on 29 Jun 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-2021-1134 in the wild and no public exploit code.\n\nAffected product: Cisco Digital Network Architecture Center (DNA Center). 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-2021-1134/ (Markdown: https://insights.sbomify.com/CVE-2021-1134/index.md)","id":"CVE-2021-1134","markdown":"https://insights.sbomify.com/CVE-2021-1134/index.md","name":"CVE-2021-1134","record":{"aliases":["GHSA-c46x-8q9c-r3vx"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco DNA Center","requires_auth":"none","summary":"An attacker can bypass certificate validation to intercept and modify sensitive network client data between DNA Center and ISE.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"catalyst_center","vendor":"cisco"}],"cvss":{"score":7.4,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-295","name":"Improper Certificate Validation"}],"description":"A vulnerability in the Cisco Identity Services Engine (ISE) integration feature of the Cisco DNA Center Software could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data. The vulnerability is due to an incomplete validation of the X.509 certificate used when establishing a connection between DNA Center and an ISE server. An attacker could exploit this vulnerability by supplying a crafted certificate and could then intercept communications between the ISE and DNA Center. A successful exploit could allow the attacker to view and alter sensitive information that the ISE maintains about clients that are connected to the network.","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 DNA Center Certificate Validation Vulnerability","id":"CVE-2021-1134","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Data Center Network Manager REST API Vulnerabilities","id":"CVE-2021-1135"},"packages":[],"prev":{"headline":"Cisco Data Center Network Manager REST API Vulnerabilities","id":"CVE-2021-1133"},"products":["Cisco Digital Network Architecture Center (DNA Center)"],"published":"2021-06-29","related":[{"cvss_score":9.6,"headline":"Cisco DNA Center Command Runner Command Injection Vulnerability","id":"CVE-2021-1264","kev_date_added":null,"published":"2021-01-20"},{"cvss_score":8,"headline":"Cisco DNA Center Privilege Escalation Vulnerability","id":"CVE-2023-20055","kev_date_added":null,"published":"2023-03-23"},{"cvss_score":7.7,"headline":"Cisco DNA Center Information Disclosure Vulnerability","id":"CVE-2021-1265","kev_date_added":null,"published":"2021-01-20"},{"cvss_score":7.5,"headline":"Cisco Catalyst Center Arbitrary File Read Vulnerability","id":"CVE-2026-20191","kev_date_added":null,"published":"2026-07-01"},{"cvss_score":7.5,"headline":"Cisco Catalyst Center Static SSH Host Key Vulnerability","id":"CVE-2024-20350","kev_date_added":null,"published":"2024-09-25"},{"cvss_score":7.5,"headline":"Cisco DNA Center Information Disclosure Vulnerability","id":"CVE-2020-3411","kev_date_added":null,"published":"2020-08-17"}],"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-11-07","vendors":["Cisco"]},"summary":"An attacker can bypass certificate validation to intercept and modify sensitive network client data between DNA Center and ISE.","url":"https://insights.sbomify.com/CVE-2021-1134/"}