{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-38425 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-38425 is a high-severity vulnerability in eProsima Fast DDS, published on 5 May 2022."},"fix_prompt":"Check this codebase for CVE-2021-38425 and fix it if it is affected.\n\nWhat it is: CVE-2021-38425 is a high-severity vulnerability in eProsima Fast DDS, published on 5 May 2022. \nExploitation: There is no known exploitation of CVE-2021-38425 in the wild and no public exploit code.\n\nAffected product: eProsima Fast DDS. 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-2021-38425/ (Markdown: https://insights.sbomify.com/CVE-2021-38425/index.md)","id":"CVE-2021-38425","markdown":"https://insights.sbomify.com/CVE-2021-38425/index.md","name":"CVE-2021-38425","record":{"aliases":["DEBIAN-CVE-2021-38425","GHSA-6x94-8g2r-qg72","UBUNTU-CVE-2021-38425"],"analysis":null,"analysis_generated_by":null,"assigner":"icscert","cpe":[{"product":"fast_dds","vendor":"eprosima"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-406","name":"Insufficient Control of Network Message Volume (Network Amplification)"}],"description":"eProsima Fast DDS versions prior to 2.4.0 (#2269) are susceptible to exploitation when an attacker sends a specially crafted packet to flood a target device with unwanted traffic, which may result in a denial-of-service condition and information exposure.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"eProsima Fast DDS Network Amplification","id":"CVE-2021-38425","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"FATEK Automation WinProladder","id":"CVE-2021-38426"},"packages":[],"prev":{"headline":"Delta Electronics DIALink","id":"CVE-2021-38424"},"products":["Fast DDS"],"published":"2022-05-05","related":[{"cvss_score":10,"headline":"Security feature bypass in n/a","id":"CVE-2025-67108","kev_date_added":null,"published":"2025-12-23"},{"cvss_score":9.7,"headline":"Manipulated DATA Submessage causes a heap-buffer-overflow error","id":"CVE-2024-28231","kev_date_added":null,"published":"2024-03-20"},{"cvss_score":9.7,"headline":"Invalid DATA_FRAG Submessage causes a bad-free error","id":"CVE-2023-50716","kev_date_added":null,"published":"2024-03-06"},{"cvss_score":9.7,"headline":"Disconnect Vulnerability in RTPS Packets Used by SROS2","id":"CVE-2023-50257","kev_date_added":null,"published":"2024-02-19"},{"cvss_score":8.6,"headline":"Malformed DATA submessage leads to bad-free error in Fast-DDS","id":"CVE-2023-42459","kev_date_added":null,"published":"2023-10-16"},{"cvss_score":8.2,"headline":"FastDDS crash when publisher send malformed packet","id":"CVE-2024-30258","kev_date_added":null,"published":"2024-05-13"},{"cvss_score":8.2,"headline":"FastDDS heap buffer overflow when publisher sends malformed packet","id":"CVE-2024-30259","kev_date_added":null,"published":"2024-05-13"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-16","vendors":["eProsima"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2021-38425/"}