{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21879 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21879 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21879 is a critical path traversal vulnerability in Lantronix, published on 22 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-21879 and fix it if it is affected.\n\nWhat it is: CVE-2021-21879 is a critical path traversal vulnerability in Lantronix, published on 22 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-21879 in the wild and no public exploit code.\n\nAffected product: Lantronix. 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-2021-21879/ (Markdown: https://insights.sbomify.com/CVE-2021-21879/index.md)","id":"CVE-2021-21879","markdown":"https://insights.sbomify.com/CVE-2021-21879/index.md","name":"CVE-2021-21879","record":{"aliases":["GHSA-5g9q-q7rm-5vq9"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Lantronix PremierWave","requires_auth":"low_privilege","summary":"An authenticated attacker can exploit a directory traversal flaw in the file upload feature to overwrite arbitrary files on the device.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"premierwave_2050","vendor":"lantronix"}],"cvss":{"score":9.9,"severity":"critical","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"A directory traversal vulnerability exists in the Web Manager File Upload functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to arbitrary file overwrite. An attacker can make an authenticated HTTP request to trigger this vulnerability.","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":"Path traversal in Lantronix","id":"CVE-2021-21879","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Path traversal in Lantronix","id":"CVE-2021-21880"},"packages":[],"prev":{"headline":"Path traversal in Lantronix","id":"CVE-2021-21878"},"products":["Lantronix"],"published":"2021-12-22","related":[],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"An authenticated attacker can exploit a directory traversal flaw in the file upload feature to overwrite arbitrary files on the device.","url":"https://insights.sbomify.com/CVE-2021-21879/"}