9.8 High
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
7.5 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access 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
0.873 High
EPSS
Percentile
98.6%
Several security issues have been identified within Citrix XenServer.
# SPDX-FileCopyrightText: 2017 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:citrix:xenserver";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.140127");
script_cve_id("CVE-2017-5572", "CVE-2017-5573", "CVE-2015-5300", "CVE-2015-7704", "CVE-2015-7705");
script_tag(name:"cvss_base", value:"7.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_version("2023-07-14T16:09:27+0000");
script_name("Citrix XenServer Multiple Security Updates (CTX220112)");
script_xref(name:"URL", value:"https://support.citrix.com/article/CTX220112");
script_tag(name:"vuldetect", value:"Check the installed hotfixes.");
script_tag(name:"solution", value:"Apply the hotfix referenced in the advisory.");
script_tag(name:"summary", value:"Several security issues have been identified within Citrix XenServer.");
script_tag(name:"impact", value:"These issues could, if exploited, allow an authenticated administrator to
perform a denial-of-service attack against the host, even when that administrator has a less-privileged RBAC role
(e.g. read-only). In addition, the issues could permit an attacker with the ability to influence NTP traffic on
the management network to disrupt time synchronization on the host until the next reboot.");
script_tag(name:"insight", value:"The following vulnerabilities have been addressed:
- CVE-2017-5572 (Low): Authenticated read-only administrator can corrupt host database
- CVE-2017-5573 (Low): Authenticated read-only administrator can cancel tasks of other administrators
- CVE-2015-5300, CVE-2015-7704, CVE-2015-7705 (Low): NTP updates.
Customers who have not enabled NTP are unaffected by the NTP issues.
Customers who have not enabled RBAC are unaffected by the RBAC issues.
Customers using Citrix XenServer 6.0.2 in the Common Criteria configuration are unaffected by the RBAC issues.");
script_tag(name:"affected", value:"XenServer 7.0
XenServer 6.5
XenServer 6.2.0
XenServer 6.0.2");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
script_tag(name:"last_modification", value:"2023-07-14 16:09:27 +0000 (Fri, 14 Jul 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-07-16 13:15:00 +0000 (Fri, 16 Jul 2021)");
script_tag(name:"creation_date", value:"2017-01-26 10:36:18 +0100 (Thu, 26 Jan 2017)");
script_category(ACT_GATHER_INFO);
script_family("Citrix Xenserver Local Security Checks");
script_copyright("Copyright (C) 2017 Greenbone AG");
script_dependencies("gb_xenserver_version.nasl");
script_mandatory_keys("xenserver/product_version", "xenserver/patches");
exit(0);
}
include("citrix_version_func.inc");
include("host_details.inc");
include("list_array_func.inc");
if( ! version = get_app_version( cpe:CPE ) )
exit( 0 );
if( ! hotfixes = get_kb_item("xenserver/patches") )
exit( 0 );
patches = make_array();
patches['7.0.0'] = make_list( 'XS70E018', 'XS70E025' );
patches['6.5.0'] = make_list( 'XS65ESP1040', 'XS65ESP1047' );
patches['6.2.0'] = make_list( 'XS62ESP1051', 'XS62ESP1055' );
patches['6.0.2'] = make_list( 'XS602ECC036' );
citrix_xenserver_check_report_is_vulnerable( version:version, hotfixes:hotfixes, patches:patches );
exit( 99 );
9.8 High
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
7.5 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access 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
0.873 High
EPSS
Percentile
98.6%