cvelist/2021/21xxx/CVE-2021-21281.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-21281",
        "STATE": "PUBLIC",
        "TITLE": "Buffer overflow due to unvalidated TCP data offset"
    },
    "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 internet of things devices. A buffer overflow vulnerability exists in Contiki-NG versions prior to 4.6. After establishing a TCP socket using the tcp-socket library, it is possible for the remote end to send a packet with a data offset that is unvalidated. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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-mc42-fqfr-h9fp",
                "refsource": "CONFIRM",
                "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-mc42-fqfr-h9fp"
            },
            {
                "name": "https://github.com/contiki-ng/contiki-ng/pull/1366",
                "refsource": "MISC",
                "url": "https://github.com/contiki-ng/contiki-ng/pull/1366"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-mc42-fqfr-h9fp",
        "discovery": "UNKNOWN"
    }
}