cvelist/2024/2xxx/CVE-2024-2357.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-2357",
        "ASSIGNER": "security@libreswan.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The Libreswan Project was notified of an issue causing libreswan to restart under some IKEv2 retransmit scenarios when a connection is configured to use PreSharedKeys (authby=secret) and the connection cannot find a matching configured secret. When such a connection is automatically added on startup using the auto= keyword, it can cause repeated crashes leading to a Denial of Service."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "IKEv2 misconfiguration can cause libreswan to abort and restart"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "The Libreswan Project (www.libreswan.org)",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "libreswan",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "3.0",
                                                        "status": "unaffected",
                                                        "lessThanOrEqual": "4.1",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "4.2",
                                                        "status": "affected",
                                                        "lessThanOrEqual": "4.12",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.0",
                                                        "status": "unaffected"
                                                    }
                                                ],
                                                "defaultStatus": "unaffected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://libreswan.org/security/CVE-2024-2357",
                "refsource": "MISC",
                "name": "https://libreswan.org/security/CVE-2024-2357"
            },
            {
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EJZJYFHKBIJ4ZK5GAWWFFR3AKJS6O5JX/",
                "refsource": "MISC",
                "name": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EJZJYFHKBIJ4ZK5GAWWFFR3AKJS6O5JX/"
            },
            {
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HEM46ALKF7NG6CAUKZ7KQERVOHWQIQKY/",
                "refsource": "MISC",
                "name": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HEM46ALKF7NG6CAUKZ7KQERVOHWQIQKY/"
            },
            {
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TVQ7MZY6LFFGRWAJNTKKN2VSEFS2VPAR/",
                "refsource": "MISC",
                "name": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TVQ7MZY6LFFGRWAJNTKKN2VSEFS2VPAR/"
            }
        ]
    },
    "configuration": [
        {
            "lang": "en",
            "value": "The vulnerability can only be triggered for connections with ikev2=yes and authby=secret"
        }
    ],
    "work_around": [
        {
            "lang": "en",
            "value": "As a workaround, one can place an unguessable long random default secret in /etc/ipsec.secrets, for example using the following command:\n\n echo -e \"# CVE-2024-2357 workaround\n: PSK \"$(openssl rand -hex 32)\"\" >> /etc/ipsec.secrets\n\nThis will ensure a PSK secret is always found, but it will always be wrong, and thus authentication will still properly fail."
        }
    ],
    "solution": [
        {
            "lang": "en",
            "value": "This issue is fixed in 4.13, 5.0 and all later versions."
        }
    ],
    "credits": [
        {
            "lang": "en",
            "value": "Andrew Vaughn"
        }
    ]
}