{"api_version":"1","generated_at":"2026-05-13T08:50:22+00:00","cve":"CVE-2023-30546","urls":{"html":"https://cve.report/CVE-2023-30546","api":"https://cve.report/api/cve/CVE-2023-30546.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-30546","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-30546"},"summary":{"title":"CVE-2023-30546","description":"Contiki-NG is an operating system for Internet of Things devices. An off-by-one error can be triggered in the Antelope database management system in the Contiki-NG operating system in versions 4.8 and prior. The problem exists in the Contiki File System (CFS) backend for the storage of data (file os/storage/antelope/storage-cfs.c). In the functions `storage_get_index` and `storage_put_index`, a buffer for merging two strings is allocated with one byte less than the maximum size of the merged strings, causing subsequent function calls to the cfs_open function to read from memory beyond the buffer size. The vulnerability has been patched in the \"develop\" branch of Contiki-NG, and is expected to be included in the next release. As a workaround, the problem can be fixed by applying the patch in Contiki-NG pull request #2425.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-04-26 19:15:00","updated_at":"2023-05-09 14:27:00"},"problem_types":["CWE-125","CWE-193"],"metrics":[],"references":[{"url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-257g-w39m-5jj4","name":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-257g-w39m-5jj4","refsource":"MISC","tags":[],"title":"Off-by-one error in Antelope DBMS · Advisory · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/contiki-ng/contiki-ng/pull/2425","name":"https://github.com/contiki-ng/contiki-ng/pull/2425","refsource":"MISC","tags":[],"title":"antelope,storage-cfs: Fix length of filename array by szsam · Pull Request #2425 · contiki-ng/contiki-ng · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-30546","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-30546","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"30546","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-2023-30546","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Contiki-NG is an operating system for Internet of Things devices. 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