cvelist/2022/2xxx/CVE-2022-2906.json

{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "DATE_PUBLIC": "2022-09-21T09:39:29.000Z",
        "ID": "CVE-2022-2906",
        "ASSIGNER": "security-officer@isc.org",
        "STATE": "PUBLIC",
        "TITLE": "Memory leaks in code handling Diffie-Hellman key exchange via TKEY RRs (OpenSSL 3.0.0+ only)"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "BIND9",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_name": "Open Source Branch 9.18",
                                            "version_value": "9.18.0 through versions before 9.18.7"
                                        },
                                        {
                                            "version_name": "Development Branch 9.19",
                                            "version_value": "9.19.0 through versions before 9.19.5"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "ISC"
                }
            ]
        }
    },
    "credit": [],
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service."
            }
        ]
    },
    "exploit": [
        {
            "lang": "eng",
            "value": "This flaw was discovered in internal testing. We are not aware of any active exploits."
        }
    ],
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "In BIND 9.18.0 -> 9.18.6 and versions 9.19.0 -> 9.19.4 of the BIND 9.19 development branch, changes between OpenSSL 1.x and OpenSSL 3.0 expose a flaw in named that causes a small memory leak in key processing when using TKEY records in Diffie-Hellman mode with OpenSSL 3.0.0 and later versions."
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://kb.isc.org/docs/cve-2022-2906",
                "refsource": "CONFIRM",
                "url": "https://kb.isc.org/docs/cve-2022-2906"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20220921 ISC has disclosed six vulnerabilities in BIND (CVE-2022-2795, CVE-2022-2881, CVE-2022-2906, CVE-2022-3080, CVE-2022-38177, CVE-2022-38178)",
                "url": "http://www.openwall.com/lists/oss-security/2022/09/21/3"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "Upgrade to the patched release most closely related to your current version of BIND: BIND 9.18.7 or BIND 9.19.5."
        }
    ],
    "source": {
        "discovery": "INTERNAL"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "There are no known workarounds. TKEY record processing in GSS-TSIG mode is not affected by this defect. The memory leak impacts authoritative DNS server TKEY record processing only. Client processing (resolver functions) do not trigger this defect."
        }
    ]
}