{"containers": {"cna": {"affected": [{"product": "contiki-ng", "vendor": "contiki-ng", "versions": [{"status": "affected", "version": "<= 4.6"}]}], "descriptions": [{"lang": "en", "value": "Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be triggered by 6LoWPAN packets sent to devices running Contiki-NG 4.6 and prior. The IPv6 header decompression function (<code>uncompress_hdr_iphc</code>) does not perform proper boundary checks when reading from the packet buffer. Hence, it is possible to construct a compressed 6LoWPAN packet that will read more bytes than what is available from the packet buffer. As of time of publication, there is not a release with a patch available. Users can apply the patch for this vulnerability out-of-band as a workaround."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "description": "CWE-125: Out-of-bounds Read", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-06-18T21:00:14", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/contiki-ng/contiki-ng/pull/1482"}], "source": {"advisory": "GHSA-hhwj-2p59-v8p9", "discovery": "UNKNOWN"}, "title": "Out-of-bounds read in the 6LoWPAN implementation", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21410", "STATE": "PUBLIC", "TITLE": "Out-of-bounds read in the 6LoWPAN implementation"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "contiki-ng", "version": {"version_data": [{"version_value": "<= 4.6"}]}}]}, "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 Next-Generation IoT devices. An out-of-bounds read can be triggered by 6LoWPAN packets sent to devices running Contiki-NG 4.6 and prior. The IPv6 header decompression function (<code>uncompress_hdr_iphc</code>) does not perform proper boundary checks when reading from the packet buffer. Hence, it is possible to construct a compressed 6LoWPAN packet that will read more bytes than what is available from the packet buffer. As of time of publication, there is not a release with a patch available. Users can apply the patch for this vulnerability out-of-band as a workaround."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-125: Out-of-bounds Read"}]}]}, "references": {"reference_data": [{"name": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9", "refsource": "CONFIRM", "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9"}, {"name": "https://github.com/contiki-ng/contiki-ng/pull/1482", "refsource": "MISC", "url": "https://github.com/contiki-ng/contiki-ng/pull/1482"}]}, "source": {"advisory": "GHSA-hhwj-2p59-v8p9", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:16.082Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-hhwj-2p59-v8p9"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/contiki-ng/contiki-ng/pull/1482"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21410", "datePublished": "2021-06-18T21:00:14", "dateReserved": "2020-12-22T00:00:00", "dateUpdated": "2024-08-03T18:09:16.082Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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