{
    "CVE_data_meta": {
        "ASSIGNER": "ics-cert@hq.dhs.gov",
        "ID": "CVE-2021-27427",
        "STATE": "PUBLIC",
        "TITLE": "RIOT OS Integer Overflow or Wraparound"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "RIOT OS",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "2020.01.1"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "RIOT OS"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "David Atch, Omri Ben Bassat, and Tamir Ariel from Microsoft Section 52, and the Azure Defender for IoT research group reported these vulnerabilities to CISA."
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "RIOT OS version 2020.01.1 is vulnerable to integer wrap-around in its implementation of calloc function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-190 Integer Overflow or Wraparound"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04",
                "refsource": "CONFIRM",
                "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04"
            },
            {
                "name": "https://github.com/RIOT-OS/RIOT",
                "refsource": "CONFIRM",
                "url": "https://github.com/RIOT-OS/RIOT"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "RIOT OS update available."
        }
    ],
    "source": {
        "defect": [
            "\u201cBadAlloc\u201d"
        ],
        "discovery": "EXTERNAL"
    }
}