9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
50.4%
Kamailio is prone to a buffer overflow vulnerability which may
result in a crash of the server.
# SPDX-FileCopyrightText: 2023 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
CPE = "cpe:/a:kamailio:kamailio";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.170372");
script_version("2023-10-13T05:06:10+0000");
script_tag(name:"last_modification", value:"2023-10-13 05:06:10 +0000 (Fri, 13 Oct 2023)");
script_tag(name:"creation_date", value:"2023-03-21 08:35:51 +0000 (Tue, 21 Mar 2023)");
script_tag(name:"cvss_base", value:"10.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2023-03-19 03:50:00 +0000 (Sun, 19 Mar 2023)");
script_cve_id("CVE-2020-27507");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Kamailio < 5.5.0 Buffer Overflow Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Buffer overflow");
script_dependencies("gb_kamailio_sip_detect.nasl");
script_mandatory_keys("kamailio/detected");
script_tag(name:"summary", value:"Kamailio is prone to a buffer overflow vulnerability which may
result in a crash of the server.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The Kamailio SIP server mishandles INVITE requests with duplicated
fields and overlength tag.");
script_tag(name:"impact", value:"Abuse of this vulnerability leads to a crash of the server or
possibly have unspecified other impact.");
script_tag(name:"affected", value:"Kamailio prior to version 5.5.0.");
script_tag(name:"solution", value:"Update to version 5.5.0 or later.");
script_xref(name:"URL", value:"https://github.com/kamailio/kamailio/issues/2503");
script_xref(name:"URL", value:"https://github.com/kamailio/kamailio/commit/ada3701d22b1fd579f06b4f54fa695fa988e685f");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!port = get_app_port(cpe: CPE))
exit(0);
if (!infos = get_app_version_and_proto(cpe: CPE, port: port))
exit(0);
version = infos["version"];
proto = infos["proto"];
if (version_is_less(version: version, test_version: "5.5.0")) {
report = report_fixed_ver(installed_version: version, fixed_version: "5.5.0");
security_message(port: port, data: report, proto: proto);
exit(0);
}
exit(99);
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
50.4%