{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-38520 exists.","fix":"No fix has been published for CVE-2024-38520 yet. Limit exposure of the affected software until one is available.","what":"CVE-2024-38520 is a medium-severity denial of service vulnerability in SoftEtherVPN, published on 26 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-38520 and fix it if it is affected.\n\nWhat it is: CVE-2024-38520 is a medium-severity denial of service vulnerability in SoftEtherVPN, published on 26 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-38520 exists.\n\nAffected product: SoftEtherVPN. 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-2024-38520/ (Markdown: https://insights.sbomify.com/CVE-2024-38520/index.md)","id":"CVE-2024-38520","markdown":"https://insights.sbomify.com/CVE-2024-38520/index.md","name":"CVE-2024-38520","record":{"aliases":["GHSA-j35p-p8pj-vqxq"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"VPN server software","requires_auth":"none","summary":"Attackers can use SoftEther VPN servers with L2TP enabled to launch amplification DDoS attacks against third-party targets.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"SoftEtherVPN is a an open-source cross-platform multi-protocol VPN Program. When SoftEtherVPN is deployed with L2TP enabled on a device, it introduces the possibility of the host being used for amplification/reflection traffic generation because it will respond to every packet with two response packets that are larger than the request packet size. These sorts of techniques are used by external actors who generate spoofed source IPs to target a destination on the internet. This vulnerability has been patched in version 5.02.5185.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"SoftEther VPN with L2TP - 2.75x Amplification","id":"CVE-2024-38520","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2024"},"n_packages":0,"n_references":3,"next":{"headline":"Persistent Cross-Site Scripting (XSS) in hushline inbox","id":"CVE-2024-38521"},"packages":[],"prev":{"headline":"yt-dlp and youtube-dl vulnerable to file system modification and RCE through improper file-extension sanitization","id":"CVE-2024-38519"},"products":["SoftEtherVPN"],"published":"2024-06-26","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-08-02","vendors":["SoftEtherVPN"]},"summary":"Attackers can use SoftEther VPN servers with L2TP enabled to launch amplification DDoS attacks against third-party targets.","url":"https://insights.sbomify.com/CVE-2024-38520/"}