{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-26713",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://downloads.asterisk.org/pub/security/",
                "refsource": "MISC",
                "name": "https://downloads.asterisk.org/pub/security/"
            },
            {
                "refsource": "MISC",
                "name": "https://downloads.asterisk.org/pub/security/AST-2021-004.html",
                "url": "https://downloads.asterisk.org/pub/security/AST-2021-004.html"
            },
            {
                "refsource": "MISC",
                "name": "https://issues.asterisk.org/jira/browse/ASTERISK-29205",
                "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29205"
            }
        ]
    }
}