Vulnerabilities > CVE-2015-2756 - Permissions, Privileges, and Access Controls vulnerability in multiple products
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 2 | |
| OS | 6 | |
| OS | 2 | |
| OS | 4 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Accessing, Modifying or Executing Executable Files An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
- Leverage Executable Code in Non-Executable Files An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
- Blue Boxing This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
- Restful Privilege Elevation Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
- Target Programs with Elevated Privileges This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2015-5402.NASL description Long latency MMIO mapping operations are not preemptible [XSA-125, CVE-2015-2752] Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756] Certain domctl operations may be abused to lock up the host [XSA-127, CVE-2015-2751] update to xen-4.3.4 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-04-13 plugin id 82730 published 2015-04-13 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82730 title Fedora 20 : xen-4.3.4-2.fc20 (2015-5402) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory 2015-5402. # include("compat.inc"); if (description) { script_id(82730); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2015-2751", "CVE-2015-2752", "CVE-2015-2756"); script_xref(name:"FEDORA", value:"2015-5402"); script_name(english:"Fedora 20 : xen-4.3.4-2.fc20 (2015-5402)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "Long latency MMIO mapping operations are not preemptible [XSA-125, CVE-2015-2752] Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756] Certain domctl operations may be abused to lock up the host [XSA-127, CVE-2015-2751] update to xen-4.3.4 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1203732" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1203737" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1203745" ); # https://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?bf46c9da" ); script_set_attribute(attribute:"solution", value:"Update the affected xen package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:xen"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:20"); script_set_attribute(attribute:"patch_publication_date", value:"2015/04/02"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2015-2020 Tenable Network Security, Inc."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! ereg(pattern:"^20([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 20.x", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC20", reference:"xen-4.3.4-2.fc20")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen"); }NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201504-04.NASL description The remote host is affected by the vulnerability described in GLSA-201504-04 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Impact : A local attacker could possibly cause a Denial of Service condition or obtain sensitive information. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 82734 published 2015-04-13 reporter This script is Copyright (C) 2015 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82734 title GLSA-201504-04 : Xen: Multiple vulnerabilities code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 201504-04. # # The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(82734); script_version("$Revision: 1.2 $"); script_cvs_date("$Date: 2015/04/17 13:32:19 $"); script_cve_id("CVE-2013-2212", "CVE-2013-3495", "CVE-2014-3967", "CVE-2014-3968", "CVE-2014-5146", "CVE-2014-5149", "CVE-2014-8594", "CVE-2014-8595", "CVE-2014-8866", "CVE-2014-8867", "CVE-2014-9030", "CVE-2014-9065", "CVE-2014-9066", "CVE-2015-0361", "CVE-2015-2044", "CVE-2015-2045", "CVE-2015-2152", "CVE-2015-2751", "CVE-2015-2752", "CVE-2015-2756"); script_bugtraq_id(61424, 61854, 67794, 67824, 69198, 69199, 71149, 71151, 71207, 71331, 71332, 71544, 71546, 71882, 72577, 72954, 72955, 73068, 73443, 73448); script_xref(name:"GLSA", value:"201504-04"); script_name(english:"GLSA-201504-04 : Xen: Multiple vulnerabilities"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-201504-04 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Impact : A local attacker could possibly cause a Denial of Service condition or obtain sensitive information. Workaround : There is no known workaround at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/201504-04" ); script_set_attribute( attribute:"solution", value: "All Xen 4.4 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/xen-4.4.2-r1' All Xen 4.2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/xen-4.2.5-r8'" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C"); script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:xen"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2015/04/11"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2015 Tenable Network Security, Inc."); script_family(english:"Gentoo Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("qpkg.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo"); if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (qpkg_check(package:"app-emulation/xen", unaffected:make_list("ge 4.4.2-r1", "rge 4.2.5-r8"), vulnerable:make_list("lt 4.4.2-r1"))) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get()); else security_hole(0); exit(0); } else { tested = qpkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Xen"); }NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2015-0068.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0068 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 84140 published 2015-06-12 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84140 title OracleVM 3.2 : xen (OVMSA-2015-0068) (POODLE) (Venom) code # # (C) Tenable Network Security, Inc. # # The package checks in this plugin were extracted from OracleVM # Security Advisory OVMSA-2015-0068. # include("compat.inc"); if (description) { script_id(84140); script_version("2.18"); script_cvs_date("Date: 2019/11/12"); script_cve_id("CVE-2006-1056", "CVE-2007-0998", "CVE-2012-0029", "CVE-2012-2625", "CVE-2012-2934", "CVE-2012-3433", "CVE-2012-3494", "CVE-2012-3495", "CVE-2012-3496", "CVE-2012-3497", "CVE-2012-3498", "CVE-2012-3515", "CVE-2012-4535", "CVE-2012-4536", "CVE-2012-4537", "CVE-2012-4538", "CVE-2012-4544", "CVE-2012-5510", "CVE-2012-5511", "CVE-2012-5512", "CVE-2012-5513", "CVE-2012-5514", "CVE-2012-5515", "CVE-2012-5634", "CVE-2013-0153", "CVE-2013-0215", "CVE-2013-1432", "CVE-2013-1442", "CVE-2013-1917", "CVE-2013-1918", "CVE-2013-1919", "CVE-2013-1920", "CVE-2013-1952", "CVE-2013-1964", "CVE-2013-2072", "CVE-2013-2076", "CVE-2013-2077", "CVE-2013-2078", "CVE-2013-2194", "CVE-2013-2195", "CVE-2013-2196", "CVE-2013-2211", "CVE-2013-4329", "CVE-2013-4355", "CVE-2013-4361", "CVE-2013-4368", "CVE-2013-4494", "CVE-2013-4553", "CVE-2013-4554", "CVE-2013-6400", "CVE-2013-6885", "CVE-2014-1892", "CVE-2014-1893", "CVE-2014-1950", "CVE-2014-3566", "CVE-2014-5146", "CVE-2014-7155", "CVE-2014-7156", "CVE-2014-7188", "CVE-2015-2044", "CVE-2015-2045", "CVE-2015-2151", "CVE-2015-2752", "CVE-2015-2756", "CVE-2015-3209", "CVE-2015-3456", "CVE-2015-4164"); 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script_set_attribute(attribute:"patch_publication_date", value:"2015/06/11"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/12"); script_set_attribute(attribute:"in_the_news", value:"true"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"OracleVM Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/OracleVM/release", "Host/OracleVM/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/OracleVM/release"); if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM"); if (! preg(pattern:"^OVS" + "3\.2" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.2", "OracleVM " + release); if (!get_kb_item("Host/OracleVM/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "OracleVM", cpu); if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu); flag = 0; if (rpm_check(release:"OVS3.2", reference:"xen-4.1.3-25.el5.127.52")) flag++; if (rpm_check(release:"OVS3.2", reference:"xen-devel-4.1.3-25.el5.127.52")) flag++; if (rpm_check(release:"OVS3.2", reference:"xen-tools-4.1.3-25.el5.127.52")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen / xen-devel / xen-tools"); }NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2608-1.NASL description Jason Geffner discovered that QEMU incorrectly handled the virtual floppy driver. This issue is known as VENOM. A malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2015-3456) Daniel P. Berrange discovered that QEMU incorrectly handled VNC websockets. A remote attacker could use this issue to cause QEMU to consume memory, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-1779) Jan Beulich discovered that QEMU, when used with Xen, didn last seen 2020-06-01 modified 2020-06-02 plugin id 83435 published 2015-05-13 reporter Ubuntu Security Notice (C) 2015-2019 Canonical, Inc. / NASL script (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83435 title Ubuntu 12.04 LTS / 14.04 LTS / 14.10 / 15.04 : qemu, qemu-kvm vulnerabilities (USN-2608-1) (Venom) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Ubuntu Security Notice USN-2608-1. The text # itself is copyright (C) Canonical, Inc. See # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered # trademark of Canonical, Inc. # include("compat.inc"); if (description) { script_id(83435); script_version("2.28"); script_cvs_date("Date: 2019/09/18 12:31:44"); script_cve_id("CVE-2015-1779", "CVE-2015-2756", "CVE-2015-3456"); script_bugtraq_id(72577, 73303); script_xref(name:"USN", value:"2608-1"); script_xref(name:"IAVA", value:"2015-A-0115"); script_name(english:"Ubuntu 12.04 LTS / 14.04 LTS / 14.10 / 15.04 : qemu, qemu-kvm vulnerabilities (USN-2608-1) (Venom)"); script_summary(english:"Checks dpkg output for updated packages."); script_set_attribute( attribute:"synopsis", value: "The remote Ubuntu host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "Jason Geffner discovered that QEMU incorrectly handled the virtual floppy driver. This issue is known as VENOM. A malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2015-3456) Daniel P. Berrange discovered that QEMU incorrectly handled VNC websockets. A remote attacker could use this issue to cause QEMU to consume memory, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-1779) Jan Beulich discovered that QEMU, when used with Xen, didn't properly restrict access to PCI command registers. A malicious guest could use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-2756). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://usn.ubuntu.com/2608-1/" ); script_set_attribute(attribute:"solution", value:"Update the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C"); 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:C/C:N/I:N/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_core", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-kvm"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.10"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:15.04"); script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/01"); script_set_attribute(attribute:"patch_publication_date", value:"2015/05/13"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/13"); script_set_attribute(attribute:"in_the_news", value:"true"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_set_attribute(attribute:"stig_severity", value:"II"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"Ubuntu Security Notice (C) 2015-2019 Canonical, Inc. / NASL script (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Ubuntu Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("ubuntu.inc"); include("misc_func.inc"); if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/Ubuntu/release"); if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu"); release = chomp(release); if (! preg(pattern:"^(12\.04|14\.04|14\.10|15\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 14.04 / 14.10 / 15.04", "Ubuntu " + release); if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu); flag = 0; if (ubuntu_check(osver:"12.04", pkgname:"qemu-kvm", pkgver:"1.0+noroms-0ubuntu14.22")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-aarch64", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-arm", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-mips", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-misc", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-ppc", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-sparc", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"qemu-system-x86", pkgver:"2.0.0+dfsg-2ubuntu1.11")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system-aarch64", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system-arm", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system-mips", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system-misc", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system-ppc", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system-sparc", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"14.10", pkgname:"qemu-system-x86", pkgver:"2.1+dfsg-4ubuntu6.6")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system-aarch64", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system-arm", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system-mips", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system-misc", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system-ppc", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system-sparc", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (ubuntu_check(osver:"15.04", pkgname:"qemu-system-x86", pkgver:"1:2.2+dfsg-5expubuntu9.1")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : ubuntu_report_get() ); exit(0); } else { tested = ubuntu_pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-kvm / qemu-system / qemu-system-aarch64 / qemu-system-arm / etc"); }NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-0701-1.NASL description Xen was updated 4.4.2_01 to address three security issues and functional bugs. The following vulnerabilities were fixed : - Long latency MMIO mapping operations are not preemptible (XSA-125, CVE-2015-2752, bnc#922705) - Unmediated PCI command register access in qemu (XSA-126, CVE-2015-2756, bnc#922706) - Certain domctl operations may be abused to lock up the host (XSA-127, CVE-2015-2751, bnc#922709) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 83714 published 2015-05-20 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83714 title SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:0701-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2015:0701-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(83714); script_version("2.10"); script_cvs_date("Date: 2019/09/11 11:22:11"); script_cve_id("CVE-2015-2751", "CVE-2015-2752", "CVE-2015-2756"); script_bugtraq_id(72577, 73443, 73448); script_name(english:"SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:0701-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "Xen was updated 4.4.2_01 to address three security issues and functional bugs. The following vulnerabilities were fixed : - Long latency MMIO mapping operations are not preemptible (XSA-125, CVE-2015-2752, bnc#922705) - Unmediated PCI command register access in qemu (XSA-126, CVE-2015-2756, bnc#922706) - Certain domctl operations may be abused to lock up the host (XSA-127, CVE-2015-2751, bnc#922709) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=921842" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=922705" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=922706" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=922709" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=923758" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2015-2751/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2015-2752/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2015-2756/" ); # https://www.suse.com/support/update/announcement/2015/suse-su-20150701-1.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?a8d72750" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Software Development Kit 12 : zypper in -t patch SUSE-SLE-SDK-12-2015-162=1 SUSE Linux Enterprise Server 12 : zypper in -t patch SUSE-SLE-SERVER-12-2015-162=1 SUSE Linux Enterprise Desktop 12 : zypper in -t patch SUSE-SLE-DESKTOP-12-2015-162=1 To bring your system up-to-date, use 'zypper patch'." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-html"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12"); script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/01"); script_set_attribute(attribute:"patch_publication_date", value:"2015/04/01"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/20"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES12" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0", os_ver + " SP" + sp); if (os_ver == "SLED12" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP0", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-debugsource-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-doc-html-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-4.4.2_02_k3.12.38_44-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-debuginfo-4.4.2_02_k3.12.38_44-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-32bit-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-debuginfo-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-debugsource-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-4.4.2_02_k3.12.38_44-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-debuginfo-4.4.2_02_k3.12.38_44-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-libs-32bit-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-libs-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.4.2_02-15.1")) flag++; if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-4.4.2_02-15.1")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen"); }NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-0746-1.NASL description The Virtualization service XEN was updated to fix various bugs and security issues. The following security issues have been fixed : CVE-2015-2756: XSA-126: Unmediated PCI command register access in qemu could have lead to denial of service attacks against the host, if PCI cards are passed through to guests. XSA-125: Long latency MMIO mapping operations were not preemptible. CVE-2015-2151: XSA-123: Instructions with register operands ignored eventual segment overrides encoded for them. Due to an insufficiently conditional assignment such a bogus segment override could have, however, corrupted a pointer used subsequently to store the result of the instruction. CVE-2015-2045: XSA-122: The code handling certain sub-operations of the HYPERVISOR_xen_version hypercall failed to fully initialize all fields of structures subsequently copied back to guest memory. Due to this hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. CVE-2015-2044: XSA-121: Emulation routines in the hypervisor dealing with certain system devices checked whether the access size by the guest is a supported one. When the access size is unsupported these routines failed to set the data to be returned to the guest for read accesses, so that hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. Also fixed : Regular crashes of dom-0 on different servers due to races in MCE access were fixed. bsc#907755 Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 83719 published 2015-05-20 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83719 title SUSE SLES11 Security Update : Xen (SUSE-SU-2015:0746-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2015:0746-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(83719); script_version("2.7"); script_cvs_date("Date: 2019/09/11 11:22:11"); script_cve_id("CVE-2015-2044", "CVE-2015-2045", "CVE-2015-2151", "CVE-2015-2756"); script_bugtraq_id(72577, 72954, 72955, 73015); script_name(english:"SUSE SLES11 Security Update : Xen (SUSE-SU-2015:0746-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "The Virtualization service XEN was updated to fix various bugs and security issues. The following security issues have been fixed : CVE-2015-2756: XSA-126: Unmediated PCI command register access in qemu could have lead to denial of service attacks against the host, if PCI cards are passed through to guests. XSA-125: Long latency MMIO mapping operations were not preemptible. CVE-2015-2151: XSA-123: Instructions with register operands ignored eventual segment overrides encoded for them. Due to an insufficiently conditional assignment such a bogus segment override could have, however, corrupted a pointer used subsequently to store the result of the instruction. CVE-2015-2045: XSA-122: The code handling certain sub-operations of the HYPERVISOR_xen_version hypercall failed to fully initialize all fields of structures subsequently copied back to guest memory. Due to this hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. CVE-2015-2044: XSA-121: Emulation routines in the hypervisor dealing with certain system devices checked whether the access size by the guest is a supported one. When the access size is unsupported these routines failed to set the data to be returned to the guest for read accesses, so that hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. Also fixed : Regular crashes of dom-0 on different servers due to races in MCE access were fixed. bsc#907755 Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); # https://www.suse.com/support/update/announcement/2015/suse-su-20150746-1.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?2b01b7fd" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Server 11 SP2 LTSS : zypper in -t patch slessp2-xen-201503=10561 To bring your system up-to-date, use 'zypper patch'." ); script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-html"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-pdf"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-pae"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-trace"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11"); script_set_attribute(attribute:"vuln_publication_date", value:"2015/03/12"); script_set_attribute(attribute:"patch_publication_date", value:"2015/04/21"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/20"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES11", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); if (cpu >!< "i386|i486|i586|i686|x86_64") audit(AUDIT_ARCH_NOT, "i386 / i486 / i586 / i686 / x86_64", cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES11" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP2", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-devel-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-kmp-default-4.1.6_08_3.0.101_0.7.29-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-kmp-trace-4.1.6_08_3.0.101_0.7.29-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-libs-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-tools-domU-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-doc-html-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-doc-pdf-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-libs-32bit-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-tools-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"x86_64", reference:"xen-kmp-pae-4.1.6_08_3.0.101_0.7.29-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-devel-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-kmp-default-4.1.6_08_3.0.101_0.7.29-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-kmp-trace-4.1.6_08_3.0.101_0.7.29-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-libs-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-tools-domU-4.1.6_08-0.9.1")) flag++; if (rpm_check(release:"SLES11", sp:"2", cpu:"i586", reference:"xen-kmp-pae-4.1.6_08_3.0.101_0.7.29-0.9.1")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Xen"); }NASL family SuSE Local Security Checks NASL id OPENSUSE-2015-434.NASL description Xen was updated to 4.4.2 to fix multiple vulnerabilities and non-security bugs. The following vulnerabilities were fixed : - CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu (XSA-128) (boo#931625) - CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests (XSA-129) (boo#931626) - CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages (XSA-130) (boo#931627) - CVE-2015-4106: Unmediated PCI register access in qemu (XSA-131) (boo#931628) - CVE-2015-4164: DoS through iret hypercall handler (XSA-136) (boo#932996) - CVE-2015-4163: GNTTABOP_swap_grant_ref operation misbehavior (XSA-134) (boo#932790) - CVE-2015-3209: heap overflow in qemu pcnet controller allowing guest to host escape (XSA-135) (boo#932770) - CVE-2015-3456: Fixed a buffer overflow in the floppy drive emulation, which could be used to denial of service attacks or potential code execution against the host. () - CVE-2015-3340: Xen did not initialize certain fields, which allowed certain remote service domains to obtain sensitive information from memory via a (1) XEN_DOMCTL_gettscinfo or (2) XEN_SYSCTL_getdomaininfolist request. () - CVE-2015-2752: Long latency MMIO mapping operations are not preemptible (XSA-125 boo#922705) - CVE-2015-2756: Unmediated PCI command register access in qemu (XSA-126 boo#922706) - CVE-2015-2751: Certain domctl operations may be abused to lock up the host (XSA-127 boo#922709) - CVE-2015-2151: Hypervisor memory corruption due to x86 emulator flaw (boo#919464 XSA-123) - CVE-2015-2045: Information leak through version information hypercall (boo#918998 XSA-122) - CVE-2015-2044: Information leak via internal x86 system device emulation (boo#918995 (XSA-121) - CVE-2015-2152: HVM qemu unexpectedly enabling emulated VGA graphics backends (boo#919663 XSA-119) - CVE-2014-3615: information leakage when guest sets high resolution (boo#895528) The following non-security bugs were fixed : - xentop: Fix memory leak on read failure - boo#923758: xen dmesg contains bogus output in early boot - boo#921842: Xentop doesn last seen 2020-06-05 modified 2015-06-23 plugin id 84333 published 2015-06-23 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84333 title openSUSE Security Update : xen (openSUSE-2015-434) (Venom) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2015-434. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(84333); script_version("2.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2014-3615", "CVE-2015-2044", "CVE-2015-2045", "CVE-2015-2151", "CVE-2015-2152", "CVE-2015-2751", "CVE-2015-2752", "CVE-2015-2756", "CVE-2015-3209", "CVE-2015-3340", "CVE-2015-3456", "CVE-2015-4103", "CVE-2015-4104", "CVE-2015-4105", "CVE-2015-4106", "CVE-2015-4163", "CVE-2015-4164"); script_name(english:"openSUSE Security Update : xen (openSUSE-2015-434) (Venom)"); script_summary(english:"Check for the openSUSE-2015-434 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "Xen was updated to 4.4.2 to fix multiple vulnerabilities and non-security bugs. The following vulnerabilities were fixed : - CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu (XSA-128) (boo#931625) - CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests (XSA-129) (boo#931626) - CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages (XSA-130) (boo#931627) - CVE-2015-4106: Unmediated PCI register access in qemu (XSA-131) (boo#931628) - CVE-2015-4164: DoS through iret hypercall handler (XSA-136) (boo#932996) - CVE-2015-4163: GNTTABOP_swap_grant_ref operation misbehavior (XSA-134) (boo#932790) - CVE-2015-3209: heap overflow in qemu pcnet controller allowing guest to host escape (XSA-135) (boo#932770) - CVE-2015-3456: Fixed a buffer overflow in the floppy drive emulation, which could be used to denial of service attacks or potential code execution against the host. () - CVE-2015-3340: Xen did not initialize certain fields, which allowed certain remote service domains to obtain sensitive information from memory via a (1) XEN_DOMCTL_gettscinfo or (2) XEN_SYSCTL_getdomaininfolist request. () - CVE-2015-2752: Long latency MMIO mapping operations are not preemptible (XSA-125 boo#922705) - CVE-2015-2756: Unmediated PCI command register access in qemu (XSA-126 boo#922706) - CVE-2015-2751: Certain domctl operations may be abused to lock up the host (XSA-127 boo#922709) - CVE-2015-2151: Hypervisor memory corruption due to x86 emulator flaw (boo#919464 XSA-123) - CVE-2015-2045: Information leak through version information hypercall (boo#918998 XSA-122) - CVE-2015-2044: Information leak via internal x86 system device emulation (boo#918995 (XSA-121) - CVE-2015-2152: HVM qemu unexpectedly enabling emulated VGA graphics backends (boo#919663 XSA-119) - CVE-2014-3615: information leakage when guest sets high resolution (boo#895528) The following non-security bugs were fixed : - xentop: Fix memory leak on read failure - boo#923758: xen dmesg contains bogus output in early boot - boo#921842: Xentop doesn't display disk statistics for VMs using qdisks - boo#919098: L3: XEN blktap device intermittently fails to connect - boo#882089: Windows 2012 R2 fails to boot up with greater than 60 vcpus - boo#903680: Problems with detecting free loop devices on Xen guest startup - boo#861318: xentop reports 'Found interface vif101.0 but domain 101 does not exist.' - boo#901488: Intel ixgbe driver assigns rx/tx queues per core resulting in irq problems on servers with a large amount of CPU cores - boo#910254: SLES11 SP3 Xen VT-d igb NIC doesn't work - boo#912011: high ping latency after upgrade to latest SLES11SP3 on xen Dom0 - boo#906689: let systemd schedule xencommons after network-online.target and remote-fs.target so that xendomains has access to remote shares The following functionality was enabled or enhanced : - Enable spice support in qemu for x86_64 - Add Qxl vga support - Enhancement to virsh/libvirtd 'send-key' command (FATE#317240) - Add domain_migrate_constraints_set API to Xend's http interface (FATE#317239)" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=861318" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=882089" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=895528" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=901488" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=903680" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=906689" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=910254" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=912011" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=918995" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=918998" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=919098" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=919464" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=919663" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=921842" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=922705" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=922706" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=922709" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=923758" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=927967" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=929339" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=931625" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=931626" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=931627" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=931628" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=932770" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=932790" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=932996" ); script_set_attribute(attribute:"solution", value:"Update the affected xen packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_core", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-doc-html"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-kmp-default"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-kmp-default-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-kmp-desktop"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-kmp-desktop-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-32bit"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-debuginfo-32bit"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-domU"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-domU-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:13.2"); script_set_attribute(attribute:"patch_publication_date", value:"2015/06/14"); script_set_attribute(attribute:"in_the_news", value:"true"); script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/23"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2015-2020 Tenable Network Security, Inc."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE13\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "13.2", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE13.2", reference:"xen-debugsource-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", reference:"xen-devel-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", reference:"xen-libs-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", reference:"xen-libs-debuginfo-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", reference:"xen-tools-domU-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", reference:"xen-tools-domU-debuginfo-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-doc-html-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-kmp-default-4.4.2_06_k3.16.7_21-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-kmp-default-debuginfo-4.4.2_06_k3.16.7_21-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-kmp-desktop-4.4.2_06_k3.16.7_21-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-kmp-desktop-debuginfo-4.4.2_06_k3.16.7_21-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-libs-32bit-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-tools-4.4.2_06-23.1") ) flag++; if ( rpm_check(release:"SUSE13.2", cpu:"x86_64", reference:"xen-tools-debuginfo-4.4.2_06-23.1") ) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen-debugsource / xen-devel / xen-libs-32bit / xen-libs / etc"); }NASL family SuSE Local Security Checks NASL id OPENSUSE-2015-314.NASL description Xen was updated to 4.3.4 to fix multiple vulnerabities and non-security bugs. The following vulnerabilities were fixed : - Long latency MMIO mapping operations are not preemptible (XSA-125 CVE-2015-2752 bnc#922705) - Unmediated PCI command register access in qemu (XSA-126 CVE-2015-2756 bnc#922706) - Hypervisor memory corruption due to x86 emulator flaw (bnc#919464 CVE-2015-2151 XSA-123) - Information leak through version information hypercall (bnc#918998 CVE-2015-2045 XSA-122) - Information leak via internal x86 system device emulation (bnc#918995 (CVE-2015-2044 XSA-121) - HVM qemu unexpectedly enabling emulated VGA graphics backends (bnc#919663 CVE-2015-2152 XSA-119) - information leakage when guest sets high resolution (bnc#895528 CVE-2014-3615) The following non-security bugs were fixed : - L3: XEN blktap device intermittently fails to connect (bnc#919098) - Problems with detecting free loop devices on Xen guest startup (bnc#903680) - xentop reports last seen 2020-06-05 modified 2015-04-21 plugin id 82907 published 2015-04-21 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82907 title openSUSE Security Update : xen (openSUSE-2015-314) NASL family Fedora Local Security Checks NASL id FEDORA_2015-5295.NASL description Long latency MMIO mapping operations are not preemptible [XSA-125, CVE-2015-2752] Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756] Certain domctl operations may be abused to lock up the host [XSA-127, CVE-2015-2751] Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-04-22 plugin id 82952 published 2015-04-22 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82952 title Fedora 22 : xen-4.5.0-7.fc22 (2015-5295) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2016-0012.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - XSA-125: Limit XEN_DOMCTL_memory_mapping hypercall to only process up to 64 GFNs (or less) (Jan Beulich) [20732412] (CVE-2015-2752) - XSA-126: xen: limit guest control of PCI command register (Jan Beulich) [20739399] (CVE-2015-2756) - XSA-128: xen: properly gate host writes of modified PCI CFG contents (Jan Beulich) [21157440] (CVE-2015-4103) - XSA-129: xen: don last seen 2020-06-01 modified 2020-06-02 plugin id 88737 published 2016-02-15 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88737 title OracleVM 2.2 : xen (OVMSA-2016-0012) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2015-0057.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - fdc: force the fifo access to be in bounds of the allocated buffer During processing of certain commands such as FD_CMD_READ_ID and FD_CMD_DRIVE_SPECIFICATION_COMMAND the fifo memory access could get out of bounds leading to memory corruption with values coming from the guest. Fix this by making sure that the index is always bounded by the allocated memory. This is CVE-2015-3456. XSA-133 (CVE-2015-3456) - fdc: force the fifo access to be in bounds of the allocated buffer During processing of certain commands such as FD_CMD_READ_ID and FD_CMD_DRIVE_SPECIFICATION_COMMAND the fifo memory access could get out of bounds leading to memory corruption with values coming from the guest. Fix this by making sure that the index is always bounded by the allocated memory. This is CVE-2015-3456. XSA-133 (CVE-2015-3456) - domctl: don last seen 2020-06-01 modified 2020-06-02 plugin id 83482 published 2015-05-15 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83482 title OracleVM 3.3 : xen (OVMSA-2015-0057) (Venom) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-0747-1.NASL description The Virtualization service XEN was updated to fix various bugs and security issues. The following security issues have been fixed : CVE-2015-2756: XSA-126: Unmediated PCI command register access in qemu could have lead to denial of service attacks against the host, if PCI cards are passed through to guests. XSA-125: Long latency MMIO mapping operations were not preemptible. CVE-2015-2151: XSA-123: Instructions with register operands ignored eventual segment overrides encoded for them. Due to an insufficiently conditional assignment such a bogus segment override could have, however, corrupted a pointer used subsequently to store the result of the instruction. CVE-2015-2045: XSA-122: The code handling certain sub-operations of the HYPERVISOR_xen_version hypercall failed to fully initialize all fields of structures subsequently copied back to guest memory. Due to this hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. CVE-2015-2044: XSA-121: Emulation routines in the hypervisor dealing with certain system devices checked whether the access size by the guest is a supported one. When the access size is unsupported these routines failed to set the data to be returned to the guest for read accesses, so that hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. Also fixed : Fully virtualized guest install from network source failed with last seen 2020-06-01 modified 2020-06-02 plugin id 83720 published 2015-05-20 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83720 title SUSE SLED11 / SLES11 Security Update : Xen (SUSE-SU-2015:0747-1) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_79F401CD27E611E5A4A5002590263BF5.NASL description The Xen Project reports : HVM guests are currently permitted to modify the memory and I/O decode bits in the PCI command register of devices passed through to them. Unless the device is an SR-IOV virtual function, after disabling one or both of these bits subsequent accesses to the MMIO or I/O port ranges would - on PCI Express devices - lead to Unsupported Request responses. The treatment of such errors is platform specific. Furthermore (at least) devices under control of the Linux pciback driver in the host are handed to guests with the aforementioned bits turned off. This means that such accesses can similarly lead to Unsupported Request responses until these flags are set as needed by the guest. In the event that the platform surfaces aforementioned UR responses as Non-Maskable Interrupts, and either the OS is configured to treat NMIs as fatal or (e.g. via ACPI last seen 2020-06-01 modified 2020-06-02 plugin id 84705 published 2015-07-14 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84705 title FreeBSD : xen-tools -- Unmediated PCI command register access in qemu (79f401cd-27e6-11e5-a4a5-002590263bf5) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-0745-1.NASL description The Virtualization service XEN was updated to fix various bugs and security issues. The following security issues have been fixed : CVE-2015-2756: XSA-126: Unmediated PCI command register access in qemu could have lead to denial of service attacks against the host, if PCI cards are passed through to guests. XSA-125: Long latency MMIO mapping operations were not preemptible. CVE-2015-2151: XSA-123: Instructions with register operands ignored eventual segment overrides encoded for them. Due to an insufficiently conditional assignment such a bogus segment override could have, however, corrupted a pointer used subsequently to store the result of the instruction. CVE-2015-2045: XSA-122: The code handling certain sub-operations of the HYPERVISOR_xen_version hypercall failed to fully initialize all fields of structures subsequently copied back to guest memory. Due to this hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. CVE-2015-2044: XSA-121: Emulation routines in the hypervisor dealing with certain system devices checked whether the access size by the guest is a supported one. When the access size is unsupported these routines failed to set the data to be returned to the guest for read accesses, so that hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 83718 published 2015-05-20 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83718 title SUSE SLES11 Security Update : Xen (SUSE-SU-2015:0745-1) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-479.NASL description This security update fixes a number of security issues in Xen in wheezy. For Debian 7 last seen 2020-03-17 modified 2016-05-18 plugin id 91198 published 2016-05-18 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/91198 title Debian DLA-479-1 : xen security update NASL family Fedora Local Security Checks NASL id FEDORA_2015-5208.NASL description Long latency MMIO mapping operations are not preemptible [XSA-125, CVE-2015-2752] Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756] Certain domctl operations may be abused to lock up the host [XSA-127, CVE-2015-2751] update to xen-4.4.2 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-04-13 plugin id 82729 published 2015-04-13 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82729 title Fedora 21 : xen-4.4.2-2.fc21 (2015-5208) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3259.NASL description Several vulnerabilities were discovered in the qemu virtualisation solution : - CVE-2014-9718 It was discovered that the IDE controller emulation is susceptible to denial of service. - CVE-2015-1779 Daniel P. Berrange discovered a denial of service vulnerability in the VNC web socket decoder. - CVE-2015-2756 Jan Beulich discovered that unmediated PCI command register could result in denial of service. - CVE-2015-3456 Jason Geffner discovered a buffer overflow in the emulated floppy disk drive, resulting in the potential execution of arbitrary code. last seen 2020-06-01 modified 2020-06-02 plugin id 83422 published 2015-05-13 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83422 title Debian DSA-3259-1 : qemu - security update (Venom) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2015-0058.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - force the fifo access to be in bounds of the allocated buffer This is CVE-2015-3456. [bug 21078935] (CVE-2015-3456) - xen: limit guest control of PCI command register Otherwise the guest can abuse that control to cause e.g. PCIe Unsupported Request responses (by disabling memory and/or I/O decoding and subsequently causing [CPU side] accesses to the respective address ranges), which (depending on system configuration) may be fatal to the host. This is CVE-2015-2756 / XSA-126. Conflicts: tools/ioemu-remote/hw/pass-through.c (CVE-2015-2756) - Limit XEN_DOMCTL_memory_mapping hypercall to only process up to 64 GFNs (or less) Said hypercall for large BARs can take quite a while. As such we can require that the hypercall MUST break up the request in smaller values. Another approach is to add preemption to it - whether we do the preemption using hypercall_create_continuation or returning EAGAIN to userspace (and have it re-invocate the call) - either way the issue we cannot easily solve is that in last seen 2020-06-01 modified 2020-06-02 plugin id 83483 published 2015-05-15 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83483 title OracleVM 3.2 : xen (OVMSA-2015-0058) (Venom) NASL family SuSE Local Security Checks NASL id SUSE_11_XEN-201503-150330.NASL description The Virtualization service XEN was updated to fix various bugs and security issues. The following security issues have been fixed : - XSA-126: Unmediated PCI command register access in qemu could have lead to denial of service attacks against the host, if PCI cards are passed through to guests. (CVE-2015-2756) - XSA-125: Long latency MMIO mapping operations were not preemptible. - XSA-123: Instructions with register operands ignored eventual segment overrides encoded for them. Due to an insufficiently conditional assignment such a bogus segment override could have, however, corrupted a pointer used subsequently to store the result of the instruction. (CVE-2015-2151) - XSA-122: The code handling certain sub-operations of the HYPERVISOR_xen_version hypercall failed to fully initialize all fields of structures subsequently copied back to guest memory. Due to this hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. (CVE-2015-2045) - XSA-121: Emulation routines in the hypervisor dealing with certain system devices checked whether the access size by the guest is a supported one. When the access size is unsupported these routines failed to set the data to be returned to the guest for read accesses, so that hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest. (CVE-2015-2044) Also fixed : - Fully virtualized guest install from network source failed with last seen 2020-06-01 modified 2020-06-02 plugin id 82990 published 2015-04-22 reporter This script is Copyright (C) 2015 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82990 title SuSE 11.3 Security Update : Xen (SAT Patch Number 10560)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html
- http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html
- http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
- http://support.citrix.com/article/CTX201145
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3259
- http://www.debian.org/security/2015/dsa-3259
- http://www.securityfocus.com/bid/72577
- http://www.securityfocus.com/bid/72577
- http://www.securitytracker.com/id/1031998
- http://www.securitytracker.com/id/1031998
- http://www.ubuntu.com/usn/USN-2608-1
- http://www.ubuntu.com/usn/USN-2608-1
- http://xenbits.xen.org/xsa/advisory-126.html
- http://xenbits.xen.org/xsa/advisory-126.html
- https://security.gentoo.org/glsa/201504-04
- https://security.gentoo.org/glsa/201504-04
- https://support.citrix.com/article/CTX206006
- https://support.citrix.com/article/CTX206006