{"answers":{"affected":"It affects 17 products.","exploited":"There is no known exploitation of CVE-2018-5743 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2018-5743 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 9 Oct 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-2018-5743 and fix it if it is affected.\n\nWhat it is: CVE-2018-5743 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 9 Oct 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-2018-5743 in the wild and no public exploit code.\n\nAffected product: F5 Big-Ip Access Policy Manager. 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-2018-5743/ (Markdown: https://insights.sbomify.com/CVE-2018-5743/index.md)","id":"CVE-2018-5743","markdown":"https://insights.sbomify.com/CVE-2018-5743/index.md","name":"CVE-2018-5743","record":{"aliases":["ALPINE-CVE-2018-5743","DEBIAN-CVE-2018-5743","DLA-1859-1","GHSA-3cr4-c5wq-3ccv","RHSA-2019:1145","RHSA-2019:1294","RHSA-2019:1492","RHSA-2019:2698","RHSA-2019:2977","UBUNTU-CVE-2018-5743","USN-3956-1","USN-3956-2"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS server software","requires_auth":"none","summary":"Attackers can bypass TCP connection limits in BIND, causing resource exhaustion and denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"isc","cpe":[{"product":"big-ip_access_policy_manager","vendor":"f5"},{"product":"big-ip_advanced_firewall_manager","vendor":"f5"},{"product":"big-ip_analytics","vendor":"f5"},{"product":"big-ip_application_acceleration_manager","vendor":"f5"},{"product":"big-ip_application_security_manager","vendor":"f5"},{"product":"big-ip_domain_name_system","vendor":"f5"},{"product":"big-ip_edge_gateway","vendor":"f5"},{"product":"big-ip_fraud_protection_service","vendor":"f5"},{"product":"big-ip_global_traffic_manager","vendor":"f5"},{"product":"big-ip_link_controller","vendor":"f5"},{"product":"big-ip_local_traffic_manager","vendor":"f5"},{"product":"big-ip_policy_enforcement_manager","vendor":"f5"},{"product":"big-ip_webaccelerator","vendor":"f5"},{"product":"big-iq_centralized_management","vendor":"f5"},{"product":"enterprise_manager","vendor":"f5"},{"product":"iworkflow","vendor":"f5"},{"product":"bind","vendor":"isc"}],"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-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -\u003e 9.10.8-P1, 9.11.0 -\u003e 9.11.6, 9.12.0 -\u003e 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -\u003e 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -\u003e 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.","ecosystems":["Red Hat:enterprise_linux:6::client","Red Hat:enterprise_linux:6::computenode","Red Hat:enterprise_linux:6::server","Red Hat:enterprise_linux:6::workstation","Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::baseos","Red Hat:rhel_eus:7.4::computenode","Red Hat:rhel_eus:7.4::server","Red Hat:rhel_eus:7.5::computenode","Red Hat:rhel_eus:7.5::server"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Limiting simultaneous TCP clients was ineffective","id":"CVE-2018-5743","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"f5:big-ip_access_policy_manager","products":["f5:big-ip_access_policy_manager","f5:big-ip_advanced_firewall_manager","f5:big-ip_analytics","f5:big-ip_application_acceleration_manager","f5:big-ip_application_security_manager","f5:big-ip_domain_name_system","f5:big-ip_edge_gateway","f5:big-ip_fraud_protection_service","f5:big-ip_global_traffic_manager","f5:big-ip_link_controller","f5:big-ip_local_traffic_manager","f5:big-ip_policy_enforcement_manager","f5:big-ip_webaccelerator","f5:big-iq_centralized_management","isc:bind"],"type":"denial_of_service","year":"2018"},"n_packages":186,"n_references":3,"next":{"headline":"A specially crafted packet can cause named to leak memory","id":"CVE-2018-5744"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["32:9.8.2-0.68.rc1.el6_10.3"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2019:1492"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-libs-lite","purl":"pkg:rpm/redhat/bind-libs-lite","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-license","purl":"pkg:rpm/redhat/bind-license","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/redhat/bind-lite-devel","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/redhat/bind-pkcs11","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-devel","purl":"pkg:rpm/redhat/bind-pkcs11-devel","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-libs","purl":"pkg:rpm/redhat/bind-pkcs11-libs","source":"RHSA-2019:1294"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.9.4-74.el7_6.1"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-utils","purl":"pkg:rpm/redhat/bind-pkcs11-utils","source":"RHSA-2019:1294"}],"prev":{"headline":"An oversight while backporting a feature leads to an assertion failure in buffer.c:420","id":"CVE-2018-5742"},"products":["BIND 9"],"published":"2019-10-09","related":[{"cvss_score":9.8,"headline":"F5 BIG-IP Configuration Utility Authentication Bypass","id":"CVE-2023-46747","kev_date_added":"2023-10-31","published":"2023-10-26"},{"cvss_score":9.8,"headline":"F5 BIG-IP Missing Authentication","id":"CVE-2022-1388","kev_date_added":"2022-05-10","published":"2022-05-05"},{"cvss_score":9.8,"headline":"F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution","id":"CVE-2021-22986","kev_date_added":"2021-11-03","published":"2021-03-31"},{"cvss_score":9.8,"headline":"F5 BIG-IP Traffic Management Microkernel Buffer Overflow","id":"CVE-2021-22991","kev_date_added":"2022-01-18","published":"2021-03-31"},{"cvss_score":9.8,"headline":"F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution","id":"CVE-2020-5902","kev_date_added":"2021-11-03","published":"2020-07-01"},{"cvss_score":9.3,"headline":"F5 BIG-IP APM Heap-based Buffer Overflow","id":"CVE-2026-94127","kev_date_added":"2026-09-22","published":"2026-09-22"},{"cvss_score":9.3,"headline":"F5 BIG-IP Stack-Based Buffer Overflow","id":"CVE-2025-53521","kev_date_added":"2026-03-27","published":"2025-10-15"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-17","vendors":["ISC"]},"summary":"Attackers can bypass TCP connection limits in BIND, causing resource exhaustion and denial of service.","url":"https://insights.sbomify.com/CVE-2018-5743/"}