{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2017-7651 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2017-7651 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 24 Apr 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-2017-7651 and fix it if it is affected.\n\nWhat it is: CVE-2017-7651 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 24 Apr 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-2017-7651 in the wild and no public exploit code.\n\nAffected product: Debian Debian Linux. 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-2017-7651/ (Markdown: https://insights.sbomify.com/CVE-2017-7651/index.md)","id":"CVE-2017-7651","markdown":"https://insights.sbomify.com/CVE-2017-7651/index.md","name":"CVE-2017-7651","record":{"aliases":["ALPINE-CVE-2017-7651","DEBIAN-CVE-2017-7651","GHSA-5jfw-q283-hm73","UBUNTU-CVE-2017-7651"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MQTT broker","requires_auth":"none","summary":"Unauthenticated attackers can crash the Eclipse Mosquitto MQTT server by exhausting RAM with numerous large-payload connections during the handshake phase.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"eclipse","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"mosquitto","vendor":"eclipse"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","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-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"In Eclipse Mosquitto 1.4.14, a user can shutdown the Mosquitto server simply by filling the RAM memory with a lot of connections with large payload. This can be done without authentications if occur in connection phase of MQTT protocol.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2021-09-24","github_poc":2,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2022-02-21T12:54:41Z","kind":"github_poc","ref":"https://github.com/St3v3nsS/CVE-2017-7651","stars":1,"title":"This is the repository used for CVE-2017-7651 for exploiting mosquitto 1.4.14"},{"date":"2021-09-24T21:39:29Z","kind":"github_poc","ref":"https://github.com/mukkul007/MqttAttack","stars":0,"title":"PoC for CVE-2017-7651"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Denial of service in Eclipse Mosquitto","id":"CVE-2017-7651","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux"],"type":"denial_of_service","year":"2017"},"n_packages":0,"n_references":5,"next":{"headline":"Denial of service in Eclipse Mosquitto","id":"CVE-2017-7652"},"packages":[],"prev":{"headline":"Auth bypass in Mosquitto","id":"CVE-2017-7650"},"products":["Eclipse Mosquitto"],"published":"2018-04-24","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["The Eclipse Foundation"]},"summary":"Unauthenticated attackers can crash the Eclipse Mosquitto MQTT server by exhausting RAM with numerous large-payload connections during the handshake phase.","url":"https://insights.sbomify.com/CVE-2017-7651/"}