{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-3517 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-3517 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-3517 is a high-severity vulnerability in Cisco Firepower Extensible Operating System, published on 27 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-2020-3517 and fix it if it is affected.\n\nWhat it is: CVE-2020-3517 is a high-severity vulnerability in Cisco Firepower Extensible Operating System, published on 27 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-2020-3517 in the wild and no public exploit code.\n\nAffected product: Cisco Firepower Extensible Operating System. 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-2020-3517/ (Markdown: https://insights.sbomify.com/CVE-2020-3517/index.md)","id":"CVE-2020-3517","markdown":"https://insights.sbomify.com/CVE-2020-3517/index.md","name":"CVE-2020-3517","record":{"aliases":["GHSA-8cw5-4pj3-6hp9"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Cisco NX-OS","requires_auth":"none","summary":"Unauthenticated attackers can cause device reloads and denial of service by sending malicious Cisco Fabric Services messages to affected Cisco NX-OS devices.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"firepower_extensible_operating_system","vendor":"cisco"},{"product":"nx-os","vendor":"cisco"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attack vector is configuration dependent and could be remote or adjacent. For more information about the attack vector, see the Details section of this advisory. The vulnerability is due to insufficient error handling when the affected software parses Cisco Fabric Services messages. An attacker could exploit this vulnerability by sending malicious Cisco Fabric Services messages to an affected device. A successful exploit could allow the attacker to cause a reload of an affected device, which could result 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 FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability","id":"CVE-2020-3517","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:firepower_extensible_operating_system","products":["cisco:firepower_extensible_operating_system","cisco:nx-os"],"type":"null_dereference","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Data Center Network Manager Cross-Site Scripting Vulnerability","id":"CVE-2020-3518"},"packages":[],"prev":{"headline":"Cisco IOS XE Software Web UI Improper Input Validation Vulnerability","id":"CVE-2020-3516"},"products":["Cisco NX-OS Software"],"published":"2020-08-27","related":[{"cvss_score":9.8,"headline":"Information disclosure in Cisco FXOS and NX-OS unknown","id":"CVE-2018-0310","kev_date_added":null,"published":"2018-06-21"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2015-6435","kev_date_added":null,"published":"2016-01-22"},{"cvss_score":8.8,"headline":"Memory corruption in Cisco NX-OS Software","id":"CVE-2021-1368","kev_date_added":null,"published":"2021-02-24"},{"cvss_score":8.8,"headline":"Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability","id":"CVE-2020-3456","kev_date_added":null,"published":"2020-10-21"},{"cvss_score":8.8,"headline":"Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability","id":"CVE-2020-3172","kev_date_added":null,"published":"2020-02-26"},{"cvss_score":8.8,"headline":"Cisco FXOS and NX-OS Software Link Layer Discovery Protocol Denial of Service Vulnerability","id":"CVE-2018-0395","kev_date_added":null,"published":"2018-10-17"},{"cvss_score":8.8,"headline":"Memory corruption in Cisco FXOS and NX-OS unknown","id":"CVE-2018-0303","kev_date_added":null,"published":"2018-06-21"}],"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":"partial"},"state":"PUBLISHED","updated":"2024-11-13","vendors":["Cisco"]},"summary":"Unauthenticated attackers can cause device reloads and denial of service by sending malicious Cisco Fabric Services messages to affected Cisco NX-OS devices.","url":"https://insights.sbomify.com/CVE-2020-3517/"}