{ "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2022-35927", "STATE": "PUBLIC", "TITLE": "Unverified DIO prefix info lengths in RPL-Classic in Contiki-NG" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "contiki-ng", "version": { "version_data": [ { "version_value": "< 4.7" } ] } } ] }, "vendor_name": "contiki-ng" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Contiki-NG is an open-source, cross-platform operating system for IoT devices. In the RPL-Classic routing protocol implementation in the Contiki-NG operating system, an incoming DODAG Information Option (DIO) control message can contain a prefix information option with a length parameter. The value of the length parameter is not validated, however, and it is possible to cause a buffer overflow when copying the prefix in the set_ip_from_prefix function. This vulnerability affects anyone running a Contiki-NG version prior to 4.7 that can receive RPL DIO messages from external parties. To obtain a patched version, users should upgrade to Contiki-NG 4.7 or later. There are no workarounds for this issue." } ] }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-9rm9-3phh-p4wm", "refsource": "CONFIRM", "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-9rm9-3phh-p4wm" }, { "name": "https://github.com/contiki-ng/contiki-ng/pull/1589", "refsource": "MISC", "url": "https://github.com/contiki-ng/contiki-ng/pull/1589" }, { "name": "https://github.com/contiki-ng/contiki-ng/pull/1589/commits/4fffab0e632c4d01910fa957d1fd9ef321eb87d2", "refsource": "MISC", "url": "https://github.com/contiki-ng/contiki-ng/pull/1589/commits/4fffab0e632c4d01910fa957d1fd9ef321eb87d2" } ] }, "source": { "advisory": "GHSA-9rm9-3phh-p4wm", "discovery": "UNKNOWN" } }