OpenSIPS rtpproxy rtpproxy_answer out-of-bounds

{
                    "vendor": "n/a",
                    "product": "OpenSIPS",
                    "versions": [
                        {
                            "version": "3.6.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.1",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.2",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.3",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.4",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.5",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.6",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.7",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.8",
                            "status": "affected"
                        },
                        {
                            "version": "4.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "4.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.9",
                            "status": "unaffected"
                        },
                        {
                            "version": "4.0.2",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "rtpproxy"
                    ]
                }