CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
72.0%
com_joomlaupdate allows the execution of arbitrary code. The default ACL
config enabled the ability of Administrator-level users to access com_joomlaupdate and trigger code execution.
# SPDX-FileCopyrightText: 2018 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:joomla:joomla";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.141583");
script_version("2023-07-20T05:05:17+0000");
script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
script_tag(name:"creation_date", value:"2018-10-10 14:51:37 +0700 (Wed, 10 Oct 2018)");
script_tag(name:"cvss_base", value:"6.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2020-08-24 17:37:00 +0000 (Mon, 24 Aug 2020)");
script_cve_id("CVE-2018-17856");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"remote_banner");
script_name("Joomla! < 3.8.13 RCE Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2018 Greenbone AG");
script_family("Web application abuses");
script_dependencies("joomla_detect.nasl");
script_mandatory_keys("joomla/installed");
script_tag(name:"summary", value:"com_joomlaupdate allows the execution of arbitrary code. The default ACL
config enabled the ability of Administrator-level users to access com_joomlaupdate and trigger code execution.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"affected", value:"Joomla! CMS versions 2.5.4 through 3.8.12.");
script_tag(name:"solution", value:"Update to version 3.8.13 or later.");
script_xref(name:"URL", value:"https://developer.joomla.org/security-centre/752-20181002-core-inadequate-default-access-level-for-com-joomlaupdate.html");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!port = get_app_port(cpe: CPE))
exit(0);
if(!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE)) exit(0);
version = infos['version'];
path = infos['location'];
if (version_in_range(version: version, test_version: "2.5.4", test_version2: "3.8.12")) {
report = report_fixed_ver(installed_version: version, fixed_version: "3.8.13", install_path: path);
security_message(port: port, data: report);
exit(0);
}
exit(0);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
72.0%