{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-39540 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-39540 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-39540 is a medium-severity denial of service vulnerability in Silicon Labs Gecko Platform, published on 20 Feb 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-2023-39540 and fix it if it is affected.\n\nWhat it is: CVE-2023-39540 is a medium-severity denial of service vulnerability in Silicon Labs Gecko Platform, published on 20 Feb 2024. 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-2023-39540 in the wild and no public exploit code.\n\nAffected product: Silicon Labs Gecko Platform. 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-2023-39540/ (Markdown: https://insights.sbomify.com/CVE-2023-39540/index.md)","id":"CVE-2023-39540","markdown":"https://insights.sbomify.com/CVE-2023-39540/index.md","name":"CVE-2023-39540","record":{"aliases":["GHSA-7v7g-38mv-3237"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Embedded TCP/IP stack","requires_auth":"none","summary":"A remote attacker can cause a denial of service in Silicon Labs uC-TCP-IP by sending a specially crafted ICMP packet that triggers an out-of-bounds read.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"uc-tcp-ip","vendor":"weston-embedded"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"},{"id":"CWE-126","name":"Buffer Over-read"}],"description":"A denial of service vulnerability exists in the ICMP and ICMPv6 parsing functionality of Weston Embedded uC-TCP-IP v3.06.01. A specially crafted network packet can lead to an out-of-bounds read. An attacker can send a malicious packet to trigger this vulnerability.This vulnerability concerns a denial of service within the parsing an IPv4 ICMP packet.","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":"Denial of service in Gecko Platform","id":"CVE-2023-39540","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in Gecko Platform","id":"CVE-2023-39541"},"packages":[],"prev":{"headline":"Failure when uploading a Logo image file","id":"CVE-2023-39539"},"products":["Gecko Platform","uC-TCP-IP"],"published":"2024-02-20","related":[{"cvss_score":8.7,"headline":"Use after free in uC-TCP-IP","id":"CVE-2023-38562","kev_date_added":null,"published":"2024-02-20"},{"cvss_score":5.9,"headline":"Denial of service in Gecko Platform","id":"CVE-2023-39541","kev_date_added":null,"published":"2024-02-20"}],"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":"2025-11-04","vendors":["Silicon Labs","Weston Embedded"]},"summary":"A remote attacker can cause a denial of service in Silicon Labs uC-TCP-IP by sending a specially crafted ICMP packet that triggers an out-of-bounds read.","url":"https://insights.sbomify.com/CVE-2023-39540/"}