cvelist/2024/42xxx/CVE-2024-42491.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-42491",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "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."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-252: Unchecked Return Value",
                        "cweId": "CWE-252"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-476: NULL Pointer Dereference",
                        "cweId": "CWE-476"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "asterisk",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "asterisk",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "< 18.24.3"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 19.0.0, < 20.9.3"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 21.0.0, < 21.4.3"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "< 18.9-cert12"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 19.0, < 20.7-cert2"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9",
                "refsource": "MISC",
                "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-v428-g3cw-7hv9"
            },
            {
                "url": "https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4",
                "refsource": "MISC",
                "name": "https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4"
            },
            {
                "url": "https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742",
                "refsource": "MISC",
                "name": "https://github.com/asterisk/asterisk/commit/4f01669c7c41c9184f3cce9a3cf1b2ebf6201742"
            },
            {
                "url": "https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2",
                "refsource": "MISC",
                "name": "https://github.com/asterisk/asterisk/commit/50bf8d4d3064930d28ecf1ce3397b14574d514d2"
            },
            {
                "url": "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8",
                "refsource": "MISC",
                "name": "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8"
            },
            {
                "url": "https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0",
                "refsource": "MISC",
                "name": "https://github.com/asterisk/asterisk/commit/a15050650abf09c10a3c135fab148220cd41d3a0"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-v428-g3cw-7hv9",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "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"
            }
        ]
    }
}