{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-42491",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2024-08-02T14:13:04.619Z",
        "datePublished": "2024-09-05T17:17:56.961Z",
        "dateUpdated": "2024-09-05T18:52:42.844Z"
    },
    "containers": {
        "cna": {
            "title": "A malformed Contact or Record-Route URI in an incoming SIP request can cause Asterisk to crash when res_resolver_unbound is used",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-252",
                            "lang": "en",
                            "description": "CWE-252: Unchecked Return Value",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-476",
                            "lang": "en",
                            "description": "CWE-476: NULL Pointer Dereference",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 5.7,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8"
                },
                {
                    "name": "https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0"
                }
            ],
            "affected": [
                {
                    "vendor": "asterisk",
                    "product": "asterisk",
                    "versions": [
                        {
                            "version": "< 18.24.3",
                            "status": "affected"
                        },
                        {
                            "version": ">= 19.0.0, < 20.9.3",
                            "status": "affected"
                        },
                        {
                            "version": ">= 21.0.0, < 21.4.3",
                            "status": "affected"
                        },
                        {
                            "version": "< 18.9-cert12",
                            "status": "affected"
                        },
                        {
                            "version": ">= 19.0, < 20.7-cert2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2024-09-05T17:17:56.961Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.24.3, 20.9.3, and 21.4.3 of Asterisk and versions 18.9-cert12 and 20.7-cert2 of certified-asterisk, if Asterisk attempts to send a SIP request to a URI whose host portion starts with `.1` or `[.1]`, and res_resolver_unbound is loaded, Asterisk will crash with a SEGV. To receive a patch, users should upgrade to one of the following versions: 18.24.3, 20.9.3, 21.4.3, certified-18.9-cert12, certified-20.7-cert2. Two workarounds are available. Disable res_resolver_unbound by setting `noload = res_resolver_unbound.so` in modules.conf, or set `rewrite_contact = yes` on all PJSIP endpoints. NOTE: This may not be appropriate for all Asterisk configurations."
                }
            ],
            "source": {
                "advisory": "GHSA-v428-g3cw-7hv9",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-09-05T18:48:24.364960Z",
                                "id": "CVE-2024-42491",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-09-05T18:52:42.844Z"
                }
            }
        ]
    }
}