CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
98.1%
The version of Apache Solr running on the remote host is 6.6.x prior to 6.6.7, or 7.x prior to 7.7.4, or 8.x prior to 8.6.3. It is, therefore, affected by an authentication bypass vulnerability. Apache Solr prevents some features considered dangerous (which could be used for remote code execution) to be configured in a ConfigSet that’s uploaded via API without authentication/authorization. The checks in place to prevent such features can be circumvented by using a combination of UPLOAD/CREATE actions.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(181480);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/18");
script_cve_id("CVE-2020-13957");
script_name(english:"Apache Solr 6.6.x < 6.6.7 / 7.x < 7.7.4 / 8.x < 8.6.3 Authentication Bypass (CVE-2020-13957)");
script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a Java application that is affected by an authentication bypass vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Apache Solr running on the remote host is 6.6.x prior to 6.6.7, or 7.x prior to 7.7.4, or 8.x prior to
8.6.3. It is, therefore, affected by an authentication bypass vulnerability. Apache Solr prevents some features
considered dangerous (which could be used for remote code execution) to be configured in a ConfigSet that's uploaded via
API without authentication/authorization. The checks in place to prevent such features can be circumvented by using a
combination of UPLOAD/CREATE actions.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"http://lucene.apache.org/solr/news.html");
# https://solr.apache.org/security.html#cve-2020-13957-the-checks-added-to-unauthenticated-configset-uploads-in-apache-solr-can-be-circumvented
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?78ad5169");
script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Solr version 8.6.3 or later, or apply any of the mitigations provided in the vendor's advisory.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-13957");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
script_set_attribute(attribute:"canvas_package", value:"CANVAS");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/12");
script_set_attribute(attribute:"patch_publication_date", value:"2020/10/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/15");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:solr");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("solr_detect.nbin");
script_require_keys("installed_sw/Apache Solr");
exit(0);
}
include('vcf.inc');
var app = 'Apache Solr';
var app_info = vcf::combined_get_app_info(app:app);
vcf::check_granularity(app_info:app_info, sig_segments:3);
var constraints = [
{'min_version': '6.6.0', 'max_version': '6.6.6', 'fixed_version': '8.6.3'},
{'min_version': '7.0.0', 'max_version': '7.7.3', 'fixed_version': '8.6.3'},
{'min_version': '8.0.0', 'fixed_version': '8.6.3'}
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
98.1%