{"answers":{"affected":"It affects 22 products.","exploited":"There is no known exploitation of CVE-2023-6399 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-6399 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-6399 is a medium-severity denial of service vulnerability in Zyxel  USG FLEX 50(W) series firmware, published on 20 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-6399 and fix it if it is affected.\n\nWhat it is: CVE-2023-6399 is a medium-severity denial of service vulnerability in Zyxel  USG FLEX 50(W) series firmware, published on 20 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-6399 in the wild and no public exploit code.\n\nAffected product: Zyxel  USG FLEX 50(W) series firmware. 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-2023-6399/ (Markdown: https://insights.sbomify.com/CVE-2023-6399/index.md)","id":"CVE-2023-6399","markdown":"https://insights.sbomify.com/CVE-2023-6399/index.md","name":"CVE-2023-6399","record":{"aliases":["GHSA-6mfv-h538-gwvr"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Zyxel firewall firmware","requires_auth":"low_privilege","summary":"An authenticated IPSec VPN user can cause a denial of service against the deviceid daemon by sending a crafted hostname if Device Insight is enabled.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"atp100_firmware","vendor":"zyxel"},{"product":"atp100w_firmware","vendor":"zyxel"},{"product":"atp200_firmware","vendor":"zyxel"},{"product":"atp500_firmware","vendor":"zyxel"},{"product":"atp700_firmware","vendor":"zyxel"},{"product":"atp800_firmware","vendor":"zyxel"},{"product":"uos","vendor":"zyxel"},{"product":"usg20-vpn_firmware","vendor":"zyxel"},{"product":"usg20w-vpn_firmware","vendor":"zyxel"},{"product":"usg_flex_100_firmware","vendor":"zyxel"},{"product":"usg_flex_100ax_firmware","vendor":"zyxel"},{"product":"usg_flex_100h_firmware","vendor":"zyxel"},{"product":"usg_flex_100w_firmware","vendor":"zyxel"},{"product":"usg_flex_200_firmware","vendor":"zyxel"},{"product":"usg_flex_200h_firmware","vendor":"zyxel"},{"product":"usg_flex_200hp_firmware","vendor":"zyxel"},{"product":"usg_flex_500_firmware","vendor":"zyxel"},{"product":"usg_flex_500h_firmware","vendor":"zyxel"},{"product":"usg_flex_50_firmware","vendor":"zyxel"},{"product":"usg_flex_50w_firmware","vendor":"zyxel"},{"product":"usg_flex_700_firmware","vendor":"zyxel"},{"product":"usg_flex_700h_firmware","vendor":"zyxel"}],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-134","name":"Use of Externally-Controlled Format String"}],"description":"A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, and USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1 could allow an authenticated IPSec VPN user to cause DoS conditions against the “deviceid” daemon by sending a crafted hostname to an affected device if it has the “Device Insight” feature enabled.","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":"Denial of service in USG FLEX 50(W) series firmware","id":"CVE-2023-6399","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Incorrect user authorization vulnerability on OpenText ZENworks Configuration Management (ZCM) product.","id":"CVE-2023-6400"},"packages":[],"prev":{"headline":"Command injection in NWA50AX firmware","id":"CVE-2023-6398"},"products":[" USG FLEX 50(W) series firmware","ATP series firmware","USG FLEX H series firmware","USG FLEX series firmware","USG20(W)-VPN series firmware"],"published":"2024-02-20","related":[{"cvss_score":9.8,"headline":"Zyxel Multiple Firewalls Buffer Overflow","id":"CVE-2023-33009","kev_date_added":"2023-06-05","published":"2023-05-24"},{"cvss_score":9.8,"headline":"Zyxel Multiple Firewalls Buffer Overflow","id":"CVE-2023-33010","kev_date_added":"2023-06-05","published":"2023-05-24"},{"cvss_score":9.8,"headline":"Zyxel Multiple Firewalls OS Command Injection","id":"CVE-2023-28771","kev_date_added":"2023-05-31","published":"2023-04-25"},{"cvss_score":9.8,"headline":"Zyxel Multiple Firewalls OS Command Injection","id":"CVE-2022-30525","kev_date_added":"2022-05-16","published":"2022-05-12"},{"cvss_score":9.8,"headline":"Zyxel Multiple Products Use of Hard-Coded Credentials","id":"CVE-2020-29583","kev_date_added":"2021-11-03","published":"2020-12-22"},{"cvss_score":9.8,"headline":"Zyxel Multiple NAS Devices OS Command Injection","id":"CVE-2020-9054","kev_date_added":"2022-03-25","published":"2020-03-04"},{"cvss_score":9.8,"headline":"Auth bypass in ATP series firmware","id":"CVE-2022-0342","kev_date_added":null,"published":"2022-03-28"}],"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":"partial"},"state":"PUBLISHED","updated":"2024-08-02","vendors":["Zyxel"]},"summary":"An authenticated IPSec VPN user can cause a denial of service against the deviceid daemon by sending a crafted hostname if Device Insight is enabled.","url":"https://insights.sbomify.com/CVE-2023-6399/"}