CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
AI Score
Confidence
Low
EPSS
Percentile
85.9%
Asterisk is prone to an information disclosure vulnerability
because it doesn
# SPDX-FileCopyrightText: 2009 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:/a:digium:asterisk";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.100341");
script_version("2023-12-20T12:22:41+0000");
script_tag(name:"last_modification", value:"2023-12-20 12:22:41 +0000 (Wed, 20 Dec 2023)");
script_tag(name:"creation_date", value:"2009-11-10 12:45:58 +0100 (Tue, 10 Nov 2009)");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_cve_id("CVE-2009-3727");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Asterisk SIP Response Username Enumeration Remote Information Disclosure Vulnerability (AST-2009-008)");
script_category(ACT_GATHER_INFO);
script_family("General");
script_copyright("Copyright (C) 2009 Greenbone AG");
script_dependencies("gb_digium_asterisk_sip_detect.nasl");
script_mandatory_keys("digium/asterisk/detected");
script_tag(name:"summary", value:"Asterisk is prone to an information disclosure vulnerability
because it doesn't provide safe responses to failed authentication attempts.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"impact", value:"Attackers can exploit this issue to discover whether specific
usernames exist. Information harvested may aid in launching further attacks.");
script_tag(name:"solution", value:"The vendor has released an advisory and updates. Please see the
references for details.");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36924");
script_xref(name:"URL", value:"http://www.asterisk.org/");
script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/507688");
script_xref(name:"URL", value:"http://downloads.asterisk.org/pub/security/AST-2009-008.html");
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_in_range( version:version, test_version:"1.6.1", test_version2:"1.6.1.8" ) ||
version_in_range( version:version, test_version:"1.6", test_version2:"1.6.16" ) ||
version_in_range( version:version, test_version:"1.4.26", test_version2:"1.4.26.2" ) ||
version_in_range( version:version, test_version:"1.2", test_version2:"1.2.34" ) ) {
report = report_fixed_ver( installed_version:version, fixed_version:"See references" );
security_message( port:port, data:report, protocol:proto );
exit( 0 );
}
exit( 99 );