{"api_version":"1","generated_at":"2026-05-13T08:50:22+00:00","cve":"CVE-2023-23609","urls":{"html":"https://cve.report/CVE-2023-23609","api":"https://cve.report/api/cve/CVE-2023-23609.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-23609","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-23609"},"summary":{"title":"CVE-2023-23609","description":"Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to and including 4.8 are vulnerable to an out-of-bounds write that can occur in the BLE-L2CAP module. The Bluetooth Low Energy - Logical Link Control and Adaptation Layer Protocol (BLE-L2CAP) module handles fragmentation of packets up the configured MTU size. When fragments are reassembled, they are stored in a packet buffer of a configurable size, but there is no check to verify that the packet buffer is large enough to hold the reassembled packet. In Contiki-NG's default configuration, it is possible that an out-of-bounds write of up to 1152 bytes occurs. The vulnerability has been patched in the \"develop\" branch of Contiki-NG, and will be included in release 4.9. The problem can be fixed by applying the patch in Contiki-NG pull request #2254 prior to the release of version 4.9.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-01-26 21:18:00","updated_at":"2023-02-07 19:59:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qr4q-6h3m-h3g7","name":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qr4q-6h3m-h3g7","refsource":"MISC","tags":[],"title":"Improper size validation of L2CAP frames · Advisory · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/contiki-ng/contiki-ng/pull/2254","name":"https://github.com/contiki-ng/contiki-ng/pull/2254","refsource":"MISC","tags":[],"title":"Check available packetbuf space before writing to it in ble-l2cap by nvt · Pull Request #2254 · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-23609","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23609","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"23609","vulnerable":"1","versionEndIncluding":"4.8","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"contiki-ng","cpe5":"contiki-ng","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-23609","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to and including 4.8 are vulnerable to an out-of-bounds write that can occur in the BLE-L2CAP module. The Bluetooth Low Energy - Logical Link Control and Adaptation Layer Protocol (BLE-L2CAP) module handles fragmentation of packets up the configured MTU size. When fragments are reassembled, they are stored in a packet buffer of a configurable size, but there is no check to verify that the packet buffer is large enough to hold the reassembled packet. In Contiki-NG's default configuration, it is possible that an out-of-bounds write of up to 1152 bytes occurs. The vulnerability has been patched in the \"develop\" branch of Contiki-NG, and will be included in release 4.9. The problem can be fixed by applying the patch in Contiki-NG pull request #2254 prior to the release of version 4.9."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-787: Out-of-bounds Write","cweId":"CWE-787"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"contiki-ng","product":{"product_data":[{"product_name":"contiki-ng","version":{"version_data":[{"version_value":"<= 4.8","version_affected":"="}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qr4q-6h3m-h3g7","refsource":"MISC","name":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qr4q-6h3m-h3g7"},{"url":"https://github.com/contiki-ng/contiki-ng/pull/2254","refsource":"MISC","name":"https://github.com/contiki-ng/contiki-ng/pull/2254"}]},"source":{"advisory":"GHSA-qr4q-6h3m-h3g7","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"LOW","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L","version":"3.1"}]}},"nvd":{"publishedDate":"2023-01-26 21:18:00","lastModifiedDate":"2023-02-07 19:59:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH"},"exploitabilityScore":2.8,"impactScore":4}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*","versionEndIncluding":"4.8","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}