{"answers":{"affected":"It affects 3 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-31247 exists.","fix":"No fix has been published for CVE-2023-31247 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-31247 is a critical memory corruption vulnerability in Silicon Labs Cesium NET, published on 14 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-31247 and fix it if it is affected.\n\nWhat it is: CVE-2023-31247 is a critical memory corruption vulnerability in Silicon Labs Cesium NET, published on 14 Nov 2023. 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-2023-31247 exists.\n\nAffected product: Silicon Labs Cesium NET. 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-2023-31247/ (Markdown: https://insights.sbomify.com/CVE-2023-31247/index.md)","id":"CVE-2023-31247","markdown":"https://insights.sbomify.com/CVE-2023-31247/index.md","name":"CVE-2023-31247","record":{"aliases":["GHSA-78q9-mf5f-jj96"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Embedded HTTP library","requires_auth":"none","summary":"A memory corruption flaw in the HTTP Host header parsing allows remote attackers to execute arbitrary code via a malicious packet.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"gecko_software_development_kit","vendor":"silabs"},{"product":"cesium_net","vendor":"weston-embedded"},{"product":"uc-http","vendor":"weston-embedded"}],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.","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":"Memory corruption in Cesium NET","id":"CVE-2023-31247","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability","id":"CVE-2023-31248"},"packages":[],"prev":{"headline":"Privilege escalation in Intel(R) SDP Tool software","id":"CVE-2023-31246"},"products":["Cesium NET","Gecko Platform","uC-HTTP"],"published":"2023-11-14","related":[{"cvss_score":10,"headline":"Memory corruption in Gecko Platform","id":"CVE-2023-45318","kev_date_added":null,"published":"2024-02-20"},{"cvss_score":9.8,"headline":"Memory corruption in Gecko Platform","id":"CVE-2023-2686","kev_date_added":null,"published":"2023-06-15"},{"cvss_score":9.3,"headline":"Unvalidated input in Silicon Labs TrustZone implementation leads to accessing Trusted memory region","id":"CVE-2023-4280","kev_date_added":null,"published":"2024-01-02"},{"cvss_score":9,"headline":"Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory","id":"CVE-2023-4020","kev_date_added":null,"published":"2023-12-15"},{"cvss_score":9,"headline":"Memory corruption in Cesium NET","id":"CVE-2023-25181","kev_date_added":null,"published":"2023-11-14"},{"cvss_score":9,"headline":"Memory corruption in Cesium NET","id":"CVE-2023-27882","kev_date_added":null,"published":"2023-11-14"},{"cvss_score":9,"headline":"Memory corruption in Cesium NET","id":"CVE-2023-28379","kev_date_added":null,"published":"2023-11-14"}],"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-11-04","vendors":["Silicon Labs","Weston Embedded"]},"summary":"A memory corruption flaw in the HTTP Host header parsing allows remote attackers to execute arbitrary code via a malicious packet.","url":"https://insights.sbomify.com/CVE-2023-31247/"}