{"answers":{"affected":"It affects 57 products.","exploited":"There is no known exploitation of CVE-2019-1891 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-1891 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-1891 is a high-severity denial of service vulnerability in Cisco Small Business 300 Series Managed Switches, published on 6 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-1891 and fix it if it is affected.\n\nWhat it is: CVE-2019-1891 is a high-severity denial of service vulnerability in Cisco Small Business 300 Series Managed Switches, published on 6 Jul 2019. 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-2019-1891 in the wild and no public exploit code.\n\nAffected product: Cisco Small Business 300 Series Managed Switches. 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-2019-1891/ (Markdown: https://insights.sbomify.com/CVE-2019-1891/index.md)","id":"CVE-2019-1891","markdown":"https://insights.sbomify.com/CVE-2019-1891/index.md","name":"CVE-2019-1891","record":{"aliases":["GHSA-8jqq-2p4j-9fgf"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco managed switch","requires_auth":"none","summary":"Unauthenticated remote attackers can cause a denial of service on Cisco Small Business switches by sending malicious requests to the web interface.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"esw2-350g52dc_firmware","vendor":"cisco"},{"product":"esw2-550x48dc_firmware","vendor":"cisco"},{"product":"sf200-24_firmware","vendor":"cisco"},{"product":"sf200-24p_firmware","vendor":"cisco"},{"product":"sf200-48_firmware","vendor":"cisco"},{"product":"sf200-48p_firmware","vendor":"cisco"},{"product":"sf300-08_firmware","vendor":"cisco"},{"product":"sf300-24_firmware","vendor":"cisco"},{"product":"sf300-24mp_firmware","vendor":"cisco"},{"product":"sf300-24p_firmware","vendor":"cisco"},{"product":"sf300-24pp_firmware","vendor":"cisco"},{"product":"sf300-48_firmware","vendor":"cisco"},{"product":"sf300-48p_firmware","vendor":"cisco"},{"product":"sf300-48pp_firmware","vendor":"cisco"},{"product":"sf302-08_firmware","vendor":"cisco"},{"product":"sf302-08mp_firmware","vendor":"cisco"},{"product":"sf302-08mpp_firmware","vendor":"cisco"},{"product":"sf302-08p_firmware","vendor":"cisco"},{"product":"sf302-08pp_firmware","vendor":"cisco"},{"product":"sf500-24_firmware","vendor":"cisco"},{"product":"sf500-24mp_firmware","vendor":"cisco"},{"product":"sf500-24p_firmware","vendor":"cisco"},{"product":"sf500-48_firmware","vendor":"cisco"},{"product":"sf500-48mp_firmware","vendor":"cisco"},{"product":"sf500-48p_firmware","vendor":"cisco"},{"product":"sg200-18_firmware","vendor":"cisco"},{"product":"sg200-26_firmware","vendor":"cisco"},{"product":"sg200-26p_firmware","vendor":"cisco"},{"product":"sg200-50_firmware","vendor":"cisco"},{"product":"sg200-50p_firmware","vendor":"cisco"},{"product":"sg300-10_firmware","vendor":"cisco"},{"product":"sg300-10mp_firmware","vendor":"cisco"},{"product":"sg300-10mpp_firmware","vendor":"cisco"},{"product":"sg300-10p_firmware","vendor":"cisco"},{"product":"sg300-10pp_firmware","vendor":"cisco"},{"product":"sg300-10sfp_firmware","vendor":"cisco"},{"product":"sg300-20_firmware","vendor":"cisco"},{"product":"sg300-28_firmware","vendor":"cisco"},{"product":"sg300-28mp_firmware","vendor":"cisco"},{"product":"sg300-28p_firmware","vendor":"cisco"},{"product":"sg300-28pp_firmware","vendor":"cisco"},{"product":"sg300-28sfp_firmware","vendor":"cisco"},{"product":"sg300-52_firmware","vendor":"cisco"},{"product":"sg300-52mp_firmware","vendor":"cisco"},{"product":"sg300-52p_firmware","vendor":"cisco"},{"product":"sg500-28_firmware","vendor":"cisco"},{"product":"sg500-28mpp_firmware","vendor":"cisco"},{"product":"sg500-28p_firmware","vendor":"cisco"},{"product":"sg500-52_firmware","vendor":"cisco"},{"product":"sg500-52mp_firmware","vendor":"cisco"},{"product":"sg500-52p_firmware","vendor":"cisco"},{"product":"sg500x-24_firmware","vendor":"cisco"},{"product":"sg500x-48_firmware","vendor":"cisco"},{"product":"sg500x-48mp_firmware","vendor":"cisco"},{"product":"sg500x-48p_firmware","vendor":"cisco"},{"product":"sg500x24mpp_firmware","vendor":"cisco"},{"product":"sg500xg8f8t_firmware","vendor":"cisco"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, 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 Small Business Series Switches HTTP Denial of Service Vulnerability","id":"CVE-2019-1891","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2019"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Small Business Series Switches Memory Corruption Vulnerability","id":"CVE-2019-1892"},"packages":[],"prev":{"headline":"Cisco Nexus 9000 Series Fabric Switches ACI Mode Fabric Infrastructure VLAN Unauthorized Access Vulnerability","id":"CVE-2019-1890"},"products":["Cisco Small Business 300 Series Managed Switches"],"published":"2019-07-06","related":[{"cvss_score":7.7,"headline":"Cisco Small Business Series Switches Simple Network Management Protocol Denial of Service Vulnerability","id":"CVE-2019-1806","kev_date_added":null,"published":"2019-05-15"},{"cvss_score":7.5,"headline":"Cisco Small Business Series Switches Memory Corruption Vulnerability","id":"CVE-2019-1892","kev_date_added":null,"published":"2019-07-06"}],"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":"2024-11-19","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can cause a denial of service on Cisco Small Business switches by sending malicious requests to the web interface.","url":"https://insights.sbomify.com/CVE-2019-1891/"}