{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-43632",
        "ASSIGNER": "cve@asrg.io",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "\nAs noted in the \u201cVTPM.md\u201d file in the eve documentation, \u201cVTPM is a server listening on port\n8877 in EVE, exposing limited functionality of the TPM to the clients. \nVTPM allows clients to\nexecute tpm2-tools binaries from a list of hardcoded options\u201d\nThe communication with this server is done using protobuf, and the data is comprised of 2\nparts:\n\n1. Header\n\n2. Data\n\nWhen a connection is made, the server is waiting for 4 bytes of data, which will be the header,\nand these 4 bytes would be parsed as uint32 size of the actual data to come.\n\nThen, in the function \u201chandleRequest\u201d this size is then used in order to allocate a payload on\nthe stack for the incoming data.\n\nAs this payload is allocated on the stack, this will allow overflowing the stack size allocated for\nthe relevant process with freely controlled data.\n\n* An attacker can crash the system. \n* An attacker can gain control over the system, specifically on the \u201cvtpm_server\u201d process\nwhich has very high privileges.\n\n\n"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-789 Memory Allocation with Excessive Size Value",
                        "cweId": "CWE-789"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": " LF-Edge, Zededa",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "EVE OS",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "3.0.0",
                                            "version_value": "9.5.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://asrg.io/security-advisories/cve-2023-43632/",
                "refsource": "MISC",
                "name": "https://asrg.io/security-advisories/cve-2023-43632/"
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.1.0-dev"
    },
    "source": {
        "discovery": "UNKNOWN"
    },
    "credits": [
        {
            "lang": "en",
            "value": "Ilay Levi"
        }
    ],
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
            }
        ]
    }
}