4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
0.001 Low
EPSS
Percentile
30.9%
X-Pack Security versions prior to 5.4.1 and 5.3.3 did not always correctly apply Document Level Security to index aliases. This bug could allow a user with restricted permissions to view data they should not have access to when performing certain operations against an index alias.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(112039);
script_version("1.3");
script_cvs_date("Date: 2019/11/04");
script_cve_id("CVE-2017-8441");
script_name(english:"Elasticsearch ESA-2017-09");
script_summary(english:"Checks the version of Elasticsearch.");
script_set_attribute(attribute:"synopsis", value:
"The remote web server hosts a Java application that is affected by an
unauthorised information disclosure vulnerability.");
script_set_attribute(attribute:"description", value:
"X-Pack Security versions prior to 5.4.1 and 5.3.3 did not always
correctly apply Document Level Security to index aliases. This bug
could allow a user with restricted permissions to view data they
should not have access to when performing certain operations against
an index alias.");
# https://www.elastic.co/guide/en/elasticsearch/reference/5.4/shard-request-cache.html#_enabling_and_disabling_caching
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?55986a44");
script_set_attribute(attribute:"see_also", value:"https://www.elastic.co/community/security");
script_set_attribute(attribute:"solution", value:
"All users of X-Pack security should upgrade to version 5.3.3 or 5.4.1.
If you cannot upgrade disabling the request cache on an index will
mitigate this bug.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-8441");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/06/01");
script_set_attribute(attribute:"patch_publication_date", value:"2017/06/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/22");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:elastic:x-pack");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("elasticsearch_detect.nbin");
script_require_keys("installed_sw/Elasticsearch");
script_require_ports("Services/www", 9200);
exit(0);
}
include("audit.inc");
include("http.inc");
include("vcf.inc");
app = "Elasticsearch";
get_install_count(app_name:app, exit_if_zero:TRUE);
port = get_http_port(default:9200);
app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE);
if (empty_or_null(app_info["Plugins/X-Pack/security"]))
audit(AUDIT_WEB_APP_EXT_NOT_INST, app, app_info['path'], "X-Pack Security plugin");
constraints = [
{ "fixed_version" : "5.3.3" },
{ "min_version" : "5.4.0", "fixed_version" : "5.4.1" }
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
0.001 Low
EPSS
Percentile
30.9%