Vulnerabilities > CVE-2018-7540 - Resource Exhaustion vulnerability in multiple products

047910
CVSS 4.9 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
COMPLETE
local
low complexity
xen
debian
CWE-400
nessus
NVD
Published: 2018-02-27
Updated: 2018-11-13

Summary

An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.

Vulnerable Configurations

Part Description Count
OS
Xen
196
OS
Debian
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • XML Ping of the Death
    An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
  • XML Entity Expansion
    An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
  • Inducing Account Lockout
    An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
  • Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS))
    XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1300.NASL
    descriptionMultiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, informations leaks or privilege escalation. For Debian 7
    last seen2020-03-17
    modified2018-03-06
    plugin id107134
    published2018-03-06
    reporterThis script is Copyright (C) 2018-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/107134
    titleDebian DLA-1300-1 : xen security update
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1300-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(107134);
  script_version("3.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2018-7540", "CVE-2018-7541");

  script_name(english:"Debian DLA-1300-1 : xen security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Multiple vulnerabilities have been discovered in the Xen hypervisor,
which could result in denial of service, informations leaks or
privilege escalation.

For Debian 7 'Wheezy', these problems have been fixed in version
4.1.6.lts1-13.

We recommend that you upgrade your xen packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2018/03/msg00003.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/xen"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxen-4.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxen-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxen-ocaml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxen-ocaml-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxenstore3.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-docs-4.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.1-amd64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-hypervisor-4.1-i386");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-system-amd64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-system-i386");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-utils-4.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen-utils-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xenstore-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"libxen-4.1", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"libxen-dev", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"libxen-ocaml", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"libxen-ocaml-dev", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"libxenstore3.0", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xen-docs-4.1", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xen-hypervisor-4.1-amd64", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xen-hypervisor-4.1-i386", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xen-system-amd64", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xen-system-i386", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xen-utils-4.1", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xen-utils-common", reference:"4.1.6.lts1-13")) flag++;
if (deb_check(release:"7.0", prefix:"xenstore-utils", reference:"4.1.6.lts1-13")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-C553A586C8.NASL
    descriptionadd Xen page-table isolation (XPTI) mitigation and Branch Target Injection (BTI) mitigation for XSA-254 DoS via non-preemptable L3/L4 pagetable freeing [XSA-252] (#1549568) grant table v2 -> v1 transition may crash Xen [XSA-255] (#1549570) x86 PVH guest without LAPIC may DoS the host [XSA-256] (#1549572) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2018-03-07
    plugin id107176
    published2018-03-07
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/107176
    titleFedora 27 : xen (2018-c553a586c8)
    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 FEDORA-2018-c553a586c8.
#

include("compat.inc");

if (description)
{
  script_id(107176);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2018-7540", "CVE-2018-7541", "CVE-2018-7542");
  script_xref(name:"FEDORA", value:"2018-c553a586c8");

  script_name(english:"Fedora 27 : xen (2018-c553a586c8)");
  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:
"add Xen page-table isolation (XPTI) mitigation and Branch Target
Injection (BTI) mitigation for XSA-254 DoS via non-preemptable L3/L4
pagetable freeing [XSA-252] (#1549568) grant table v2 -> v1 transition
may crash Xen [XSA-255] (#1549570) x86 PVH guest without LAPIC may DoS
the host [XSA-256] (#1549572)

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
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://bodhi.fedoraproject.org/updates/FEDORA-2018-c553a586c8"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");

  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:27");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/07");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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 = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^27([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 27", "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:"FC27", reference:"xen-4.9.1-5.fc27")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4131.NASL
    descriptionMultiple vulnerabilities have been discovered in the Xen hypervisor : - CVE-2018-7540 Jann Horn discovered that missing checks in page table freeing may result in denial of service. - CVE-2018-7541 Jan Beulich discovered that incorrect error handling in grant table checks may result in guest-to-host denial of service and potentially privilege escalation. - CVE-2018-7542 Ian Jackson discovered that insufficient handling of x86 PVH guests without local APICs may result in guest-to-host denial of service.
    last seen2020-06-01
    modified2020-06-02
    plugin id107123
    published2018-03-05
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/107123
    titleDebian DSA-4131-1 : xen - security update
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4131. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(107123);
  script_version("3.4");
  script_cvs_date("Date: 2018/11/13 12:30:46");

  script_cve_id("CVE-2018-7540", "CVE-2018-7541", "CVE-2018-7542");
  script_xref(name:"DSA", value:"4131");

  script_name(english:"Debian DSA-4131-1 : xen - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Multiple vulnerabilities have been discovered in the Xen hypervisor :

  - CVE-2018-7540
    Jann Horn discovered that missing checks in page table
    freeing may result in denial of service.

  - CVE-2018-7541
    Jan Beulich discovered that incorrect error handling in
    grant table checks may result in guest-to-host denial of
    service and potentially privilege escalation.

  - CVE-2018-7542
    Ian Jackson discovered that insufficient handling of x86
    PVH guests without local APICs may result in
    guest-to-host denial of service."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2018-7540"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2018-7541"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2018-7542"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/xen"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/xen"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2018/dsa-4131"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the xen packages.

For the stable distribution (stretch), these problems have been fixed
in version 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"9.0", prefix:"libxen-4.8", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"libxen-dev", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"libxenstore3.0", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-hypervisor-4.8-amd64", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-hypervisor-4.8-arm64", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-hypervisor-4.8-armhf", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-system-amd64", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-system-arm64", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-system-armhf", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-utils-4.8", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xen-utils-common", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;
if (deb_check(release:"9.0", prefix:"xenstore-utils", reference:"4.8.3+comet2+shim4.10.0+comet3-1+deb9u5")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-0678-1.NASL
    descriptionThis update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka
    last seen2020-06-01
    modified2020-06-02
    plugin id108369
    published2018-03-15
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108369
    titleSUSE SLES11 Security Update : xen (SUSE-SU-2018:0678-1) (Meltdown) (Spectre)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:0678-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(108369);
  script_version("1.7");
  script_cvs_date("Date: 2019/09/10 13:51:47");

  script_cve_id("CVE-2017-11334", "CVE-2017-15595", "CVE-2017-17563", "CVE-2017-17564", "CVE-2017-17565", "CVE-2017-17566", "CVE-2017-18030", "CVE-2017-5715", "CVE-2017-5753", "CVE-2017-5754", "CVE-2017-5898", "CVE-2018-5683", "CVE-2018-7540", "CVE-2018-7541");
  script_xref(name:"IAVA", value:"2018-A-0019");
  script_xref(name:"IAVA", value:"2018-A-0020");

  script_name(english:"SUSE SLES11 Security Update : xen (SUSE-SU-2018:0678-1) (Meltdown) (Spectre)");
  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:
"This update for xen fixes several issues. These security issues were
fixed :

  - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent
    information leaks via side effects of speculative
    execution, aka 'Spectre' and 'Meltdown' attacks
    (bsc#1074562, bsc#1068032)

  - CVE-2018-5683: The vga_draw_text function allowed local
    OS guest privileged users to cause a denial of service
    (out-of-bounds read and QEMU process crash) by
    leveraging improper memory address validation
    (bsc#1076116).

  - CVE-2017-18030: The cirrus_invalidate_region function
    allowed local OS guest privileged users to cause a
    denial of service (out-of-bounds array access and QEMU
    process crash) via vectors related to negative pitch
    (bsc#1076180).

  - CVE-2017-15595: x86 PV guest OS users were able to cause
    a DoS (unbounded recursion, stack consumption, and
    hypervisor crash) or possibly gain privileges via
    crafted page-table stacking (bsc#1061081)

  - CVE-2017-17566: Prevent PV guest OS users to cause a
    denial of service (host OS crash) or gain host OS
    privileges in shadow mode by mapping a certain auxiliary
    page (bsc#1070158).

  - CVE-2017-17563: Prevent guest OS users to cause a denial
    of service (host OS crash) or gain host OS privileges by
    leveraging an incorrect mask for reference-count
    overflow checking in shadow mode (bsc#1070159).

  - CVE-2017-17564: Prevent guest OS users to cause a denial
    of service (host OS crash) or gain host OS privileges by
    leveraging incorrect error handling for reference
    counting in shadow mode (bsc#1070160).

  - CVE-2017-17565: Prevent PV guest OS users to cause a
    denial of service (host OS crash) if shadow mode and
    log-dirty mode are in place, because of an incorrect
    assertion related to M2P (bsc#1070163).

  - Added missing intermediate preemption checks for guest
    requesting removal of memory. This allowed malicious
    guest administrator to cause denial of service due to
    the high cost of this operation (bsc#1080635).

  - Because of XEN not returning the proper error messages
    when transitioning grant tables from v2 to v1 a
    malicious guest was able to cause DoS or potentially
    allowed for privilege escalation as well as information
    leaks (bsc#1080662).

  - CVE-2017-5898: The CCID Card device emulator support was
    vulnerable to an integer overflow flaw allowing a
    privileged user to crash the Qemu process on the host
    resulting in DoS (bsc#1024307)

  - Unprivileged domains could have issued well-timed writes
    to xenstore which conflict with transactions to stall
    progress of the control domain or driver domain,
    possibly leading to DoS (bsc#1030144, XSA-206).

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=1024307"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1030144"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1061081"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1068032"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1070158"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1070159"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1070160"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1070163"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1074562"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076116"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076180"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1080635"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1080662"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-11334/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-15595/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17563/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17564/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17565/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17566/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-18030/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-5715/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-5753/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-5754/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-5898/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-5683/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-7540/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-7541/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20180678-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?39d89a0f"
  );
  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-SP3-LTSS:zypper in -t patch
slessp3-xen-13511=1

SUSE Linux Enterprise Point of Sale 11-SP3:zypper in -t patch
sleposp3-xen-13511=1

SUSE Linux Enterprise Debuginfo 11-SP3:zypper in -t patch
dbgsp3-xen-13511=1

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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/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:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  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-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-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:"2017/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/15");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 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:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-kmp-default-4.2.5_21_3.0.101_0.47.106.14-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-libs-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-tools-domU-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-doc-html-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-doc-pdf-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-libs-32bit-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-tools-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.14-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"i586", reference:"xen-kmp-default-4.2.5_21_3.0.101_0.47.106.14-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"i586", reference:"xen-libs-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"i586", reference:"xen-tools-domU-4.2.5_21-45.19.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"i586", reference:"xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.14-45.19.1")) 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 familyFedora Local Security Checks
    NASL idFEDORA_2018-0746DAC335.NASL
    descriptionupdate Xen page-table isolation (XPTI) mitigation and add Branch Target Injection (BTI) mitigation for XSA-254 DoS via non-preemptable L3/L4 pagetable freeing [XSA-252] (#1549568) grant table v2 -> v1 transition may crash Xen [XSA-255] (#1549570) x86 PVH guest without LAPIC may DoS the host [XSA-256] (#1549572) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2018-03-21
    plugin id108492
    published2018-03-21
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108492
    titleFedora 26 : xen (2018-0746dac335)
    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 FEDORA-2018-0746dac335.
#

include("compat.inc");

if (description)
{
  script_id(108492);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2018-7540", "CVE-2018-7541", "CVE-2018-7542");
  script_xref(name:"FEDORA", value:"2018-0746dac335");

  script_name(english:"Fedora 26 : xen (2018-0746dac335)");
  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:
"update Xen page-table isolation (XPTI) mitigation and add Branch
Target Injection (BTI) mitigation for XSA-254 DoS via non-preemptable
L3/L4 pagetable freeing [XSA-252] (#1549568) grant table v2 -> v1
transition may crash Xen [XSA-255] (#1549570) x86 PVH guest without
LAPIC may DoS the host [XSA-256] (#1549572)

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
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://bodhi.fedoraproject.org/updates/FEDORA-2018-0746dac335"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");

  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:26");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/21");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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 = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^26([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 26", "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:"FC26", reference:"xen-4.8.3-3.fc26")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen");
}
  • NASL familyMisc.
    NASL idXEN_SERVER_XSA-252.NASL
    descriptionAccording to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service vulnerability. Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
    last seen2020-06-01
    modified2020-06-02
    plugin id107097
    published2018-03-02
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/107097
    titleXen guest_remove_page() Function Pagetable Unpinning Handling Guest-to-host DoS (XSA-252)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(107097);
  script_version("1.3");
  script_cvs_date("Date: 2019/11/08");

  script_cve_id("CVE-2018-7540");
  script_bugtraq_id(103174);

  script_name(english:"Xen guest_remove_page() Function Pagetable Unpinning Handling Guest-to-host DoS (XSA-252)");
  script_summary(english:"Checks 'xl info' output for the Xen hypervisor version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Xen hypervisor installation is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the Xen hypervisor
installed on the remote host is affected by a denial of service
vulnerability.

Note that Nessus has checked the changeset versions based on the
xen.git change log. Nessus did not check guest hardware configurations
or if patches were applied manually to the source code before a
recompile and reinstall.");
  script_set_attribute(attribute:"see_also", value:"http://xenbits.xen.org/xsa/advisory-252.html");
  script_set_attribute(attribute:"see_also", value:"https://xenbits.xen.org/gitweb/?p=xen.git;a=summary");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch according to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-7540");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/02");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:xen:xen");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("xen_server_detect.nbin");
  script_require_keys("installed_sw/Xen Hypervisor", "Settings/ParanoidReport");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("install_func.inc");
include("misc_func.inc");

app_name = "Xen Hypervisor";
install  = get_single_install(app_name:app_name);
if (report_paranoia < 2) audit(AUDIT_PARANOID);

version         = install['version'];
display_version = install['display_version'];
path            = install['path'];
managed_status  = install['Managed status'];
changeset       = install['Changeset'];

if (!empty_or_null(changeset))
  display_version += " (changeset " + changeset + ")";

# Installations that are vendor-managed are handled by OS-specific local package checks
if (managed_status == "managed")
  audit(AUDIT_INST_PATH_NOT_VULN, app_name, display_version, path);

fixes['4.6']['fixed_ver']           = '4.6.6';
fixes['4.6']['affected_ver_regex']  = '^4\\.6\\.';

fixes['4.7']['fixed_ver']           = '4.7.5-pre';
fixes['4.7']['affected_ver_regex']  = '^4\\.7\\.';

fixes['4.8']['fixed_ver']           = '4.8.4-pre';
fixes['4.8']['affected_ver_regex']  = '^4\\.8\\.';

fixes['4.9']['fixed_ver']           = '4.9.2-pre';
fixes['4.9']['affected_ver_regex']  = '^4\\.9\\.';

fixes['4.10']['fixed_ver']           = '4.10.1-pre';
fixes['4.10']['affected_ver_regex']  = '^4\\.10\\.';

fix = NULL;
foreach ver_branch (keys(fixes))
{
  if (version =~ fixes[ver_branch]['affected_ver_regex'])
  {
    fix = fixes[ver_branch]['fixed_ver'];
  }
}

if (empty_or_null(fix))
  audit(AUDIT_INST_PATH_NOT_VULN, app_name, display_version, path);

items  = make_array(
  "Installed version", display_version,
  "Fixed version", fix,
  "Path", path
);

order  = make_list("Path", "Installed version", "Fixed version");
report = report_items_str(report_items:items, ordered_fields:order) + '\n';

security_report_v4(port:0, extra:report, severity:SECURITY_WARNING);
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2018-0218.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0218 for details.
    last seen2020-06-01
    modified2020-06-02
    plugin id109987
    published2018-05-23
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109987
    titleOracleVM 3.4 : xen (OVMSA-2018-0218) (Meltdown) (Spectre)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2018-0218.
#

include("compat.inc");

if (description)
{
  script_id(109987);
  script_version("1.10");
  script_cvs_date("Date: 2019/09/27 13:00:35");

  script_cve_id("CVE-2017-17565", "CVE-2017-17566", "CVE-2017-5715", "CVE-2017-5753", "CVE-2017-5754", "CVE-2018-10981", "CVE-2018-10982", "CVE-2018-7540", "CVE-2018-7541", "CVE-2018-8897");

  script_name(english:"OracleVM 3.4 : xen (OVMSA-2018-0218) (Meltdown) (Spectre)");
  script_summary(english:"Checks the RPM output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote OracleVM host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote OracleVM system is missing necessary patches to address
critical security updates : please see Oracle VM Security Advisory
OVMSA-2018-0218 for details."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/oraclevm-errata/2018-May/000856.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected xen / xen-tools packages."
  );
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/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:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/05/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/23");
  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) 2018-2019 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\.4" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.4", "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_exists(rpm:"xen-4.4.4-105", release:"OVS3.4") && rpm_check(release:"OVS3.4", reference:"xen-4.4.4-105.0.45.el6")) flag++;
if (rpm_exists(rpm:"xen-tools-4.4.4-105", release:"OVS3.4") && rpm_check(release:"OVS3.4", reference:"xen-tools-4.4.4-105.0.45.el6")) 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-tools");
}
  • NASL familyMisc.
    NASL idCITRIX_XENSERVER_CTX232096.NASL
    descriptionThe version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities.
    last seen2020-06-01
    modified2020-06-02
    plugin id108886
    published2018-04-06
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108886
    titleCitrix XenServer Multiple Vulnerabilities (CTX232096)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(108886);
  script_version("1.4");
  script_cvs_date("Date: 2019/11/08");

  script_cve_id(
    "CVE-2017-17563",
    "CVE-2017-17564",
    "CVE-2017-17565",
    "CVE-2017-17566",
    "CVE-2018-7540",
    "CVE-2018-7541"
  );
  script_bugtraq_id(
    102167,
    102169,
    102172,
    103174,
    103177
  );

  script_name(english:"Citrix XenServer Multiple Vulnerabilities (CTX232096)");
  script_summary(english:"Checks for patches.");

  script_set_attribute(attribute:"synopsis", value:
"A server virtualization platform installed on the remote host is
affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Citrix XenServer running on the remote host is missing
a security hotfix. It is, therefore, affected by multiple
vulnerabilities.");
  script_set_attribute(attribute:"see_also", value:"https://support.citrix.com/article/CTX232096");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate hotfix according to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/04/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:citrix:xenserver");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("citrix_xenserver_version.nbin");
  script_require_keys("Host/XenServer/version", "Host/local_checks_enabled", "Settings/ParanoidReport");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);

app_name = "Citrix XenServer";
version = get_kb_item_or_exit("Host/XenServer/version");
get_kb_item_or_exit("Host/local_checks_enabled");
patches = get_kb_item("Host/XenServer/patches");
vuln = FALSE;
fix = '';
pending = "Refer to vendor for patch/mitigation options";

if (version == "6.0.2")
{
  fix = "XS602ECC051"; # CTX232082
  if (fix >!< patches) vuln = TRUE;
}
else if (version =~ "^6\.2")
{
  fix = "XS62ESP1067"; # CTX232083
  if (fix >!< patches) vuln = TRUE;
}
else if (version =~ "^6\.5($|[^0-9])")
{
  fix = "XS65ESP1065"; # CTX232084
  if (fix >!< patches) vuln = TRUE;
}
else audit(AUDIT_INST_VER_NOT_VULN, app_name, version);

if (vuln)
{
  port = 0;
  report = report_items_str(
    report_items:make_array(
      "Installed version", version,
      "Missing hotfix", fix
    ),
    ordered_fields:make_list("Installed version", "Missing hotfix")
  );
  security_report_v4(port:port, severity:SECURITY_WARNING, extra:report);
}
else audit(AUDIT_PATCH_INSTALLED, fix);
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2018-0272.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0272 for details.
    last seen2020-06-01
    modified2020-06-02
    plugin id118963
    published2018-11-15
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118963
    titleOracleVM 3.2 : xen (OVMSA-2018-0272) (Foreshadow) (Spectre)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2018-0272.
#

include("compat.inc");

if (description)
{
  script_id(118963);
  script_version("1.3");
  script_cvs_date("Date: 2019/09/27 13:00:35");

  script_cve_id("CVE-2018-10981", "CVE-2018-10982", "CVE-2018-3620", "CVE-2018-3639", "CVE-2018-3646", "CVE-2018-3665", "CVE-2018-7540", "CVE-2018-7541", "CVE-2018-8897");

  script_name(english:"OracleVM 3.2 : xen (OVMSA-2018-0272) (Foreshadow) (Spectre)");
  script_summary(english:"Checks the RPM output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote OracleVM host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote OracleVM system is missing necessary patches to address
critical security updates : please see Oracle VM Security Advisory
OVMSA-2018-0272 for details."
  );
  # https://oss.oracle.com/pipermail/oraclevm-errata/2018-November/000906.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f53ac2a8"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected xen / xen-devel / xen-tools packages."
  );
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/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:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.2");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/15");
  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) 2018-2019 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.el5.223.214")) flag++;
if (rpm_check(release:"OVS3.2", reference:"xen-devel-4.1.3-25.el5.223.214")) flag++;
if (rpm_check(release:"OVS3.2", reference:"xen-tools-4.1.3-25.el5.223.214")) 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 familyMisc.
    NASL idCITRIX_XENSERVER_CTX232655.NASL
    descriptionThe version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities.
    last seen2020-06-01
    modified2020-06-02
    plugin id108887
    published2018-04-06
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108887
    titleCitrix XenServer Multiple Vulnerabilities (CTX232655)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(108887);
  script_version("1.5");
  script_cvs_date("Date: 2018/07/09 12:26:58");

  script_cve_id("CVE-2016-2074", "CVE-2018-7540", "CVE-2018-7541");
  script_bugtraq_id(85700, 103174, 103177);

  script_name(english:"Citrix XenServer Multiple Vulnerabilities (CTX232655)"); 
  script_summary(english:"Checks for patches.");

  script_set_attribute(attribute:"synopsis", value:
"A server virtualization platform installed on the remote host is
affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Citrix XenServer running on the remote host is missing
a security hotfix. It is, therefore, affected by multiple
vulnerabilities."
);
  script_set_attribute(attribute:"see_also", value:"https://support.citrix.com/article/CTX232655");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate hotfix according to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:"vuln_publication_date",value:"2018/03/21");
  script_set_attribute(attribute:"patch_publication_date",value:"2018/03/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/06");

  script_set_attribute(attribute:"plugin_type",value:"local");
  script_set_attribute(attribute:"cpe",value:"cpe:/a:citrix:xenserver");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("citrix_xenserver_version.nbin");
  script_require_keys("Host/XenServer/version", "Host/local_checks_enabled", "Settings/ParanoidReport");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);

app_name = "Citrix XenServer";
version = get_kb_item_or_exit("Host/XenServer/version");
get_kb_item_or_exit("Host/local_checks_enabled");
patches = get_kb_item("Host/XenServer/patches");
vuln = FALSE;
fix = '';

if (version =~ "^7\.0($|[^0-9])")
{
  fix1 = "XS70E052"; # CTX233362
  fix2 = "XS70E051"; # CTX233364
  if (fix1 >!< patches && fix2 >!< patches) vuln = TRUE;
}
else if (version =~ "^7\.1($|[^0-9])")
{
  fix = "XS71ECU1012"; # CTX233365
  fix2 = "XS71ECU1013"; # CTX233363
  if (fix >!< patches && fix2 >!< patches) vuln = TRUE;
}
else if (version =~ "^7\.2($|[^0-9])")
{
  fix = "XS72E016"; # CTX233366
  if (fix >!< patches) vuln = TRUE;
}
else if (version =~ "^7\.3($|[^0-9])")
{
  fix = "XS73E003"; # CTX233368
  if (fix >!< patches) vuln = TRUE;
}


else audit(AUDIT_INST_VER_NOT_VULN, app_name, version);

if (vuln)
{
  port = 0;
  report = report_items_str(
    report_items:make_array(
      "Installed version", version,
      "Missing hotfix", fix
    ),
    ordered_fields:make_list("Installed version", "Missing hotfix")
  );
  security_report_v4(port:port, severity:SECURITY_HOLE, extra:report);
}
else audit(AUDIT_PATCH_INSTALLED, fix);
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2018-0248.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0248 for details.
    last seen2020-06-01
    modified2020-06-02
    plugin id111992
    published2018-08-20
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/111992
    titleOracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre)
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2018-0020.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: OVMF commit=173bf5c847e3ca8b42c11796ce048d8e2e916ff8 - BUILDINFO: xen commit=9ccc143584e12027a8db854d19ce8a120d22cfac - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - gnttab: don
    last seen2020-06-01
    modified2020-06-02
    plugin id107129
    published2018-03-05
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/107129
    titleOracleVM 3.4 : xen (OVMSA-2018-0020) (Meltdown) (Spectre)
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2018-0021.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : - BUILDINFO: xen commit=b2a6db11ced11291a472bc1bda20ce329eda4d66 - BUILDINFO: QEMU upstream commit=8bff6989bd0bafcc0ddf859c23ce6a2ff21a80ff - BUILDINFO: QEMU traditional commit=346fdd7edd73f8287d0d0a2bab9c67b71bc6b8ba - BUILDINFO: IPXE commit=9a93db3f0947484e30e753bbd61a10b17336e20e - BUILDINFO: SeaBIOS commit=7d9cbe613694924921ed1a6f8947d711c5832eee - gnttab: don
    last seen2020-06-01
    modified2020-06-02
    plugin id107130
    published2018-03-05
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/107130
    titleOracleVM 3.4 : xen (OVMSA-2018-0021) (Meltdown) (Spectre)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2018-454.NASL
    descriptionThis update for xen to version 4.9.2 fixes several issues. This feature was added : - Added script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU. They are triggered via
    last seen2020-06-05
    modified2018-05-14
    plugin id109751
    published2018-05-14
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109751
    titleopenSUSE Security Update : xen (openSUSE-2018-454) (Meltdown)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1577.NASL
    descriptionMultiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, informations leaks or privilege escalation. For Debian 8
    last seen2020-06-01
    modified2020-06-02
    plugin id118892
    published2018-11-13
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118892
    titleDebian DLA-1577-1 : xen security update
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-0909-1.NASL
    descriptionThis update for xen fixes the following issues: Update to Xen 4.7.5 bug fix only release (bsc#1027519) Security issues fixed : - CVE-2018-7540: Fixed DoS via non-preemptable L3/L4 pagetable freeing (XSA-252) (bsc#1080635) - CVE-2018-7541: A grant table v2 -> v1 transition may crash Xen (XSA-255) (bsc#1080662) - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754 Fixed information leaks via side effects of speculative execution (XSA-254). Includes Spectre v2 mitigation. (bsc#1074562) - Preserve xen-syms from xen-dbg.gz to allow processing vmcores with crash(1) (bsc#1087251) - Xen HVM: Fixed unchecked MSR access error (bsc#1072834) - Add script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU They are triggered via xl vcpu-set domU N (fate#324965) - Make sure tools and tools-domU require libs from the very same build 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 seen2020-06-01
    modified2020-06-02
    plugin id109001
    published2018-04-11
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109001
    titleSUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:0909-1) (Meltdown) (Spectre)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-1184-1.NASL
    descriptionThis update for xen to version 4.9.2 fixes several issues. This feature was added : - Added script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU. They are triggered via
    last seen2020-06-01
    modified2020-06-02
    plugin id109677
    published2018-05-10
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109677
    titleSUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:1184-1) (Meltdown)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201810-06.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201810-06 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the referenced CVE identifiers for details. Impact : A local attacker could cause a Denial of Service condition or disclose sensitive information. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id118506
    published2018-10-31
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118506
    titleGLSA-201810-06 : Xen: Multiple vulnerabilities (Foreshadow) (Meltdown) (Spectre)
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2018-0271.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0271 for details.
    last seen2020-06-01
    modified2020-06-02
    plugin id118962
    published2018-11-15
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118962
    titleOracleVM 3.3 : xen (OVMSA-2018-0271) (Foreshadow) (Spectre)

References