{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2018-5538 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2018-5538 yet. Limit exposure of the affected software until one is available.","what":"CVE-2018-5538 is a low-severity vulnerability in F5 Big-Ip Domain Name System, published on 25 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-5538 and fix it if it is affected.\n\nWhat it is: CVE-2018-5538 is a low-severity vulnerability in F5 Big-Ip Domain Name System, published on 25 Jul 2018. 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-2018-5538 in the wild and no public exploit code.\n\nAffected product: F5 Big-Ip Domain Name 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-2018-5538/ (Markdown: https://insights.sbomify.com/CVE-2018-5538/index.md)","id":"CVE-2018-5538","markdown":"https://insights.sbomify.com/CVE-2018-5538/index.md","name":"CVE-2018-5538","record":{"aliases":["GHSA-vjx8-8j32-57mf"],"analysis":{"component_type":"network_device","fix_type":"configuration_change","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"F5 BIG-IP DNS","requires_auth":"none","summary":"Attackers can bypass NOTIFY restrictions on F5 BIG-IP DNS if the notify port is changed from default, allowing unauthorized DNS updates.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"f5","cpe":[{"product":"big-ip_domain_name_system","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"}],"cvss":{"score":3.7,"severity":"low","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.0"},"cwes":[],"description":"On F5 BIG-IP DNS 13.1.0-13.1.0.7, 12.1.3-12.1.3.5, DNS Express / DNS Zones accept NOTIFY messages on the management interface from source IP addresses not listed in the 'Allow NOTIFY From' configuration parameter when the db variable \"dnsexpress.notifyport\" is set to any value other than the default of \"0\".","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":"Security feature bypass in BIG-IP (DNS)","id":"CVE-2018-5538","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"f5:big-ip_domain_name_system","products":["f5:big-ip_domain_name_system","f5:big-ip_global_traffic_manager","f5:big-ip_link_controller","f5:big-ip_local_traffic_manager"],"type":"security_feature_bypass","year":"2018"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in BIG-IP (ASM)","id":"CVE-2018-5539"},"packages":[],"prev":{"headline":"Denial of service in BIG-IP (LTM, AAM, AFM, APM, ASM, Edge Gateway, GTM, PEM, WebAccelerator, WebSafe)","id":"CVE-2018-5537"},"products":["BIG-IP (DNS)"],"published":"2018-07-25","related":[{"cvss_score":8.8,"headline":"Cross-site scripting in BIG-IP DNS \u0026 GTM","id":"CVE-2022-23013","kev_date_added":null,"published":"2022-01-25"},{"cvss_score":8.5,"headline":"iControl REST and tmsh vulnerability","id":"CVE-2026-40061","kev_date_added":null,"published":"2026-05-13"},{"cvss_score":7.5,"headline":"BIG-IP DNS Express vulnerability CVE-2022-41787","id":"CVE-2022-41787","kev_date_added":null,"published":"2022-10-19"},{"cvss_score":7.5,"headline":"Denial of service in BIG-IP DNS","id":"CVE-2021-23032","kev_date_added":null,"published":"2021-09-14"},{"cvss_score":7.5,"headline":"Denial of service in BIG-IP DNS","id":"CVE-2020-27717","kev_date_added":null,"published":"2020-12-24"},{"cvss_score":7.5,"headline":"Denial of service in BIG-IP GTM \u0026 DNS","id":"CVE-2020-27721","kev_date_added":null,"published":"2020-12-24"},{"cvss_score":7.2,"headline":"BIG-IP iQuery mesh vulnerability","id":"CVE-2023-28742","kev_date_added":null,"published":"2023-05-03"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-17","vendors":["F5 Networks, Inc."]},"summary":"Attackers can bypass NOTIFY restrictions on F5 BIG-IP DNS if the notify port is changed from default, allowing unauthorized DNS updates.","url":"https://insights.sbomify.com/CVE-2018-5538/"}