9.9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.5 High
AI Score
Confidence
Low
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
0.002 Low
EPSS
Percentile
50.8%
Two 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("1.3.6.1.4.1.25623.1.0.140173");
script_cve_id("CVE-2017-2615", "CVE-2017-2620");
script_tag(name:"cvss_base", value:"9.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
script_version("2023-11-03T05:05:46+0000");
script_name("Citrix XenServer Multiple Security Updates (CTX220771)");
script_xref(name:"URL", value:"https://support.citrix.com/article/CTX220771");
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:"Two security issues have been identified within Citrix XenServer.");
script_tag(name:"impact", value:"These issues could, if exploited, allow the administrator of an HVM guest VM to compromise the host.");
script_tag(name:"insight", value:"The following vulnerabilities have been addressed:
- CVE-2017-2615 (High): QEMU: oob access in cirrus bitblt copy
- CVE-2017-2620 (High): QEMU: cirrus_bitblt_cputovideo does not check if memory region is safe.
Customers using only PV guest VMs are not affected by this vulnerability.
Customers using only VMs that use the std-vga graphics emulation are not affected by this vulnerability.");
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:"2023-11-03 05:05:46 +0000 (Fri, 03 Nov 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2018-09-07 10:29:00 +0000 (Fri, 07 Sep 2018)");
script_tag(name:"creation_date", value:"2017-02-22 14:10:53 +0100 (Wed, 22 Feb 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( 'XS70E029' );
patches['6.5.0'] = make_list( 'XS65ESP1050' );
patches['6.2.0'] = make_list( 'XS62ESP1057' );
patches['6.0.2'] = make_list( 'XS602ECC041' );
citrix_xenserver_check_report_is_vulnerable( version:version, hotfixes:hotfixes, patches:patches );
exit( 99 );
9.9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.5 High
AI Score
Confidence
Low
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
0.002 Low
EPSS
Percentile
50.8%