{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2024-39536 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2024-39536 yet. Limit exposure of the affected software until one is available.","what":"CVE-2024-39536 is a medium-severity denial of service vulnerability in Juniper Junos, published on 11 Jul 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-2024-39536 and fix it if it is affected.\n\nWhat it is: CVE-2024-39536 is a medium-severity denial of service vulnerability in Juniper Junos, published on 11 Jul 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-2024-39536 in the wild and no public exploit code.\n\nAffected product: Juniper Junos. 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-2024-39536/ (Markdown: https://insights.sbomify.com/CVE-2024-39536/index.md)","id":"CVE-2024-39536","markdown":"https://insights.sbomify.com/CVE-2024-39536/index.md","name":"CVE-2024-39536","record":{"aliases":["GHSA-vpjj-mfgj-j3mj"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Juniper network OS","requires_auth":"none","summary":"An unauthenticated adjacent attacker can cause a memory leak and denial of service by flapping authenticated BFD sessions in Junos OS.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"juniper","cpe":[{"product":"junos","vendor":"juniper"},{"product":"junos_os_evolved","vendor":"juniper"}],"cvss":{"score":6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"A Missing Release of Memory after Effective Lifetime vulnerability in the Periodic Packet Management Daemon (ppmd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a \n\nDenial-of-Service (DoS).\n\nWhen a BFD session configured with authentication flaps, ppmd memory can leak. Whether the leak happens depends on a race condition which is outside the attackers control. This issue only affects BFD operating in distributed aka delegated (which is the default behavior) or inline mode.\n\nWhether the leak occurs can be monitored with the following CLI command:\n\n\u003e show ppm request-queue\n\nFPC     Pending-request\nfpc0                   2\nrequest-total-pending: 2\n\nwhere a continuously increasing number of pending requests is indicative of the leak. \n\nThis issue affects:\n\nJunos OS:\n\n  *  All versions before 21.2R3-S8,\n  *  21.4 versions before 21.4R3-S7,\n  *  22.1 versions before 22.1R3-S4,\n  *  22.2 versions before 22.2R3-S4, \n  *  22.3 versions before 22.3R3,\n  *  22.4 versions before 22.4R2-S2, 22.4R3.\n\nJunos OS Evolved:\n  *  All versions before 21.2R3-S8-EVO,\n  *  21.4-EVO versions before 21.4R3-S7-EVO,\n  *  22.2-EVO versions before 22.2R3-S4-EVO,\n  *  22.3-EVO versions before 22.3R3-EVO,\n  *  22.4-EVO versions before 22.4R3-EVO.","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":"Junos OS and Junos OS Evolved: Flaps of BFD sessions with authentication cause a ppmd memory leak","id":"CVE-2024-39536","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"juniper:junos","products":["juniper:junos","juniper:junos_os_evolved"],"type":"denial_of_service","year":"2024"},"n_packages":0,"n_references":1,"next":{"headline":"Junos OS Evolved: ACX7000 Series: Ports which have been inadvertently exposed can be reached over the network","id":"CVE-2024-39537"},"packages":[],"prev":{"headline":"Junos OS Evolved: ACX 7000 Series: When specific traffic is received in a VPLS scenario evo-pfemand crashes","id":"CVE-2024-39535"},"products":["Junos OS","Junos OS Evolved"],"published":"2024-07-11","related":[{"cvss_score":9.8,"headline":"Juniper Junos OS EX Series and SRX Series PHP External Variable Modification","id":"CVE-2023-36845","kev_date_added":"2023-11-13","published":"2023-08-17"},{"cvss_score":8.8,"headline":"Juniper Junos OS Path Traversal","id":"CVE-2020-1631","kev_date_added":"2022-03-25","published":"2020-05-04"},{"cvss_score":6.7,"headline":"Juniper Junos OS Improper Isolation or Compartmentalization","id":"CVE-2025-21590","kev_date_added":"2025-03-13","published":"2025-03-12"},{"cvss_score":5.3,"headline":"Juniper Junos OS SRX Series Missing Authentication for Critical Function","id":"CVE-2023-36851","kev_date_added":"2023-11-13","published":"2023-09-26"},{"cvss_score":5.3,"headline":"Juniper Junos OS EX Series PHP External Variable Modification","id":"CVE-2023-36844","kev_date_added":"2023-11-13","published":"2023-08-17"},{"cvss_score":5.3,"headline":"Juniper Junos OS SRX Series Missing Authentication for Critical Function","id":"CVE-2023-36846","kev_date_added":"2023-11-13","published":"2023-08-17"},{"cvss_score":5.3,"headline":"Juniper Junos OS EX Series Missing Authentication for Critical Function","id":"CVE-2023-36847","kev_date_added":"2023-11-13","published":"2023-08-17"}],"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":["Juniper Networks"]},"summary":"An unauthenticated adjacent attacker can cause a memory leak and denial of service by flapping authenticated BFD sessions in Junos OS.","url":"https://insights.sbomify.com/CVE-2024-39536/"}