6.8 Medium
AI Score
Confidence
Low
7.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
0.093 Low
EPSS
Percentile
94.7%
Multiple AVM FRITZ!Box devices are prone to a Denial of Service.
# SPDX-FileCopyrightText: 2018 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-only
CPE = "cpe:/o:avm:fritz%21_os";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.108463");
script_version("2023-07-20T05:05:17+0000");
script_cve_id("CVE-2007-0431");
script_name("Multiple AVM FRITZ!Box VoIP Remote Denial of Service Vulnerability");
script_tag(name:"cvss_base", value:"7.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
script_tag(name:"creation_date", value:"2018-09-16 17:38:23 +0200 (Sun, 16 Sep 2018)");
script_category(ACT_GATHER_INFO);
script_family("Denial of Service");
script_copyright("Copyright (C) 2018 Greenbone AG");
script_dependencies("gb_avm_fritz_box_detect.nasl");
script_mandatory_keys("avm/fritz/model", "avm/fritz/firmware_version");
script_xref(name:"URL", value:"https://web.archive.org/web/20160308013152/http://mazzoo.de/blog/2007/01/18");
script_xref(name:"URL", value:"https://www.securityfocus.com/archive/1/457406/30/0/threaded");
script_tag(name:"summary", value:"Multiple AVM FRITZ!Box devices are prone to a Denial of Service.");
script_tag(name:"insight", value:"Sending a zero-length UDP packet to port 5060 (SIP) of a AVM FRITZ!Box will
crash the VoIP-telephony application. This works from any IP-interface, including the DSL line.");
script_tag(name:"impact", value:"A remote attacker might be able to crash the VoIP-telephony application.");
script_tag(name:"vuldetect", value:"Check the AVM FRITZ!OS version.");
script_tag(name:"solution", value:"Updates are available. Please see the references or the script output
on the available updates for the matching model.");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("version_func.inc");
include("host_details.inc");
if( ! fw_version = get_app_version( cpe:CPE, nofork:TRUE ) ) exit( 0 );
if( ! model = get_kb_item( "avm/fritz/model" ) ) exit( 0 );
# nb: There is no "full" list available on the affected/fixed versions
# and models. The list below was gathered from various online resources.
fixes = make_array("5010", "4.27",
"5012", "4.27",
"5050", "4.26",
"7050", "4.26");
if( ! fixes[model] ) exit( 99 );
patch = fixes[model];
if( version_is_less( version:fw_version, test_version:patch ) ) {
report = 'Model: ' + model + '\n';
report += 'Installed Firmware: ' + fw_version + '\n';
report += 'Fixed Firmware: ' + patch;
security_message( port:0, data:report );
exit( 0 );
}
exit( 99 );