Vulnerabilities > CVE-2018-15470 - Resource Exhaustion vulnerability in XEN

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
CWE-400
nessus
NVD
Published: 2018-08-17
Updated: 2018-11-13

Summary

An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 "Operations on data structures" of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. This allows a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.

Vulnerable Configurations

Part Description Count
OS
Xen
213

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 familySuSE Local Security Checks
    NASL idOPENSUSE-2018-1624.NASL
    descriptionThis update for xen fixes the following issues : Update to Xen 4.10.2 bug fix release (bsc#1027519). Security vulnerabilities fixed : - CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040) - CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045) - CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-280) (bsc#1115047) - CVE-2018-18883: Fixed an issue related to inproper restriction of nested VT-x, which allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-278) (bsc#1114405) - CVE-2018-15468: Fixed incorrect MSR_DEBUGCTL handling, which allowed guests to enable Branch Trace Store and may cause a Denial of Service (DoS) of the entire host. (XSA-269) (bsc#1103276) - CVE-2018-15469: Fixed use of v2 grant tables on ARM, which were not properly implemented and may cause a Denial of Service (DoS). (XSA-268) (bsc#1103275) - CVE-2018-15470: Fixed an issue in the logic in oxenstored for handling writes, which allowed a guest to write memory unbounded leading to system-wide Denial of Service (DoS). (XSA-272) (bsc#1103279) - CVE-2018-3646: Mitigations for VMM aspects of L1 Terminal Fault (XSA-273) (bsc#1091107) Other bugs fixed : - Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940) - Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528) - Fixed a kernel oops related to fs/dcache.c called by d_materialise_unique() (bsc#1094508) This update was imported from the SUSE:SLE-15:Update update project.
    last seen2020-06-05
    modified2018-12-31
    plugin id119951
    published2018-12-31
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/119951
    titleopenSUSE Security Update : xen (openSUSE-2018-1624) (Foreshadow)
    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-2018-1624.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(119951);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2018-15468", "CVE-2018-15469", "CVE-2018-15470", "CVE-2018-18883", "CVE-2018-19961", "CVE-2018-19962", "CVE-2018-19965", "CVE-2018-19966", "CVE-2018-3646");

  script_name(english:"openSUSE Security Update : xen (openSUSE-2018-1624) (Foreshadow)");
  script_summary(english:"Check for the openSUSE-2018-1624 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for xen fixes the following issues :

Update to Xen 4.10.2 bug fix release (bsc#1027519).

Security vulnerabilities fixed :

  - CVE-2018-19961, CVE-2018-19962: Fixed an issue related
    to insufficient TLB flushing with AMD IOMMUs, which
    potentially allowed a guest to escalate its privileges,
    may cause a Denial of Service (DoS) affecting the entire
    host, or may be able to access data it is not supposed
    to access. (XSA-275) (bsc#1115040)

  - CVE-2018-19965: Fixed an issue related to the INVPCID
    instruction in case non-canonical addresses are
    accessed, which may allow a guest to cause Xen to crash,
    resulting in a Denial of Service (DoS) affecting the
    entire host. (XSA-279) (bsc#1115045)

  - CVE-2018-19966: Fixed an issue related to a previous fix
    for XSA-240, which conflicted with shadow paging and
    allowed a guest to cause Xen to crash, resulting in a
    Denial of Service (DoS). (XSA-280) (bsc#1115047)

  - CVE-2018-18883: Fixed an issue related to inproper
    restriction of nested VT-x, which allowed a guest to
    cause Xen to crash, resulting in a Denial of Service
    (DoS). (XSA-278) (bsc#1114405)

  - CVE-2018-15468: Fixed incorrect MSR_DEBUGCTL handling,
    which allowed guests to enable Branch Trace Store and
    may cause a Denial of Service (DoS) of the entire host.
    (XSA-269) (bsc#1103276)

  - CVE-2018-15469: Fixed use of v2 grant tables on ARM,
    which were not properly implemented and may cause a
    Denial of Service (DoS). (XSA-268) (bsc#1103275)

  - CVE-2018-15470: Fixed an issue in the logic in
    oxenstored for handling writes, which allowed a guest to
    write memory unbounded leading to system-wide Denial of
    Service (DoS). (XSA-272) (bsc#1103279)

  - CVE-2018-3646: Mitigations for VMM aspects of L1
    Terminal Fault (XSA-273) (bsc#1091107)

Other bugs fixed :

  - Fixed an issue related to a domU hang on SLE12-SP3 HV
    (bsc#1108940)

  - Fixed an issue with xpti=no-dom0 not working as expected
    (bsc#1105528)

  - Fixed a kernel oops related to fs/dcache.c called by
    d_materialise_unique() (bsc#1094508)

This update was imported from the SUSE:SLE-15:Update update project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1027519"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1078292"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1091107"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1094508"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1103275"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1103276"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1103279"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1105528"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1108940"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1114405"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115040"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115045"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115047"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/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: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-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-32bit-debuginfo");
  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-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:15.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/29");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/31");
  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:"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 !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", 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:"SUSE15.0", reference:"xen-debugsource-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-devel-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-libs-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-libs-debuginfo-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-tools-domU-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-tools-domU-debuginfo-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-doc-html-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-libs-32bit-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-libs-32bit-debuginfo-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-tools-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-tools-debuginfo-4.10.2_04-lp150.2.12.1") ) 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 / xen-debugsource / xen-devel / xen-doc-html / xen-libs / etc");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-683DFDE81A.NASL
    descriptionL1 Terminal Fault speculative side channel patch bundle [XSA-273, CVE-2018-3620, CVE-2018-3646] drop patches also in the bundle, which also includes Use of v2 grant tables may cause crash on ARM [XSA-268] (#1616081) x86: Incorrect MSR_DEBUGCTL handling lets guests enable BTS [XSA-269] (#1616077) oxenstored does not apply quota-maxentity [XSA-272] (#1616080) 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
    modified2019-01-03
    plugin id120490
    published2019-01-03
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/120490
    titleFedora 28 : xen (2018-683dfde81a) (Foreshadow)
    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-2018-683dfde81a.
#

include("compat.inc");

if (description)
{
  script_id(120490);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2018-15468", "CVE-2018-15469", "CVE-2018-15470", "CVE-2018-3620", "CVE-2018-3646");
  script_xref(name:"FEDORA", value:"2018-683dfde81a");

  script_name(english:"Fedora 28 : xen (2018-683dfde81a) (Foreshadow)");
  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:
"L1 Terminal Fault speculative side channel patch bundle [XSA-273,
CVE-2018-3620, CVE-2018-3646] drop patches also in the bundle, which
also includes Use of v2 grant tables may cause crash on ARM [XSA-268]
(#1616081) x86: Incorrect MSR_DEBUGCTL handling lets guests enable BTS
[XSA-269] (#1616077) oxenstored does not apply quota-maxentity
[XSA-272] (#1616080)

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-2018-683dfde81a"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:N/A:N");
  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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-3646");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  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:28");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/03");
  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) 2019-2020 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:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "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:"FC28", reference:"xen-4.10.1-6.fc28")) 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 familySuSE Local Security Checks
    NASL idOPENSUSE-2019-1046.NASL
    descriptionThis update for xen fixes the following issues : Update to Xen 4.10.2 bug fix release (bsc#1027519). Security vulnerabilities fixed : - CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040) - CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045) - CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-280) (bsc#1115047) - CVE-2018-18883: Fixed an issue related to inproper restriction of nested VT-x, which allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-278) (bsc#1114405) - CVE-2018-15468: Fixed incorrect MSR_DEBUGCTL handling, which allowed guests to enable Branch Trace Store and may cause a Denial of Service (DoS) of the entire host. (XSA-269) (bsc#1103276) - CVE-2018-15469: Fixed use of v2 grant tables on ARM, which were not properly implemented and may cause a Denial of Service (DoS). (XSA-268) (bsc#1103275) - CVE-2018-15470: Fixed an issue in the logic in oxenstored for handling writes, which allowed a guest to write memory unbounded leading to system-wide Denial of Service (DoS). (XSA-272) (bsc#1103279) - CVE-2018-3646: Mitigations for VMM aspects of L1 Terminal Fault (XSA-273) (bsc#1091107) Other bugs fixed : - Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940) - Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528) - Fixed a kernel oops related to fs/dcache.c called by d_materialise_unique() (bsc#1094508) This update was imported from the SUSE:SLE-15:Update update project.
    last seen2020-06-01
    modified2020-06-02
    plugin id123167
    published2019-03-27
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/123167
    titleopenSUSE Security Update : xen (openSUSE-2019-1046) (Foreshadow)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2019-1046.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(123167);
  script_version("1.2");
  script_cvs_date("Date: 2020/01/31");

  script_cve_id("CVE-2018-15468", "CVE-2018-15469", "CVE-2018-15470", "CVE-2018-18883", "CVE-2018-19961", "CVE-2018-19962", "CVE-2018-19965", "CVE-2018-19966", "CVE-2018-3646");

  script_name(english:"openSUSE Security Update : xen (openSUSE-2019-1046) (Foreshadow)");
  script_summary(english:"Check for the openSUSE-2019-1046 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for xen fixes the following issues :

Update to Xen 4.10.2 bug fix release (bsc#1027519).

Security vulnerabilities fixed :

  - CVE-2018-19961, CVE-2018-19962: Fixed an issue related
    to insufficient TLB flushing with AMD IOMMUs, which
    potentially allowed a guest to escalate its privileges,
    may cause a Denial of Service (DoS) affecting the entire
    host, or may be able to access data it is not supposed
    to access. (XSA-275) (bsc#1115040)

  - CVE-2018-19965: Fixed an issue related to the INVPCID
    instruction in case non-canonical addresses are
    accessed, which may allow a guest to cause Xen to crash,
    resulting in a Denial of Service (DoS) affecting the
    entire host. (XSA-279) (bsc#1115045)

  - CVE-2018-19966: Fixed an issue related to a previous fix
    for XSA-240, which conflicted with shadow paging and
    allowed a guest to cause Xen to crash, resulting in a
    Denial of Service (DoS). (XSA-280) (bsc#1115047)

  - CVE-2018-18883: Fixed an issue related to inproper
    restriction of nested VT-x, which allowed a guest to
    cause Xen to crash, resulting in a Denial of Service
    (DoS). (XSA-278) (bsc#1114405)

  - CVE-2018-15468: Fixed incorrect MSR_DEBUGCTL handling,
    which allowed guests to enable Branch Trace Store and
    may cause a Denial of Service (DoS) of the entire host.
    (XSA-269) (bsc#1103276)

  - CVE-2018-15469: Fixed use of v2 grant tables on ARM,
    which were not properly implemented and may cause a
    Denial of Service (DoS). (XSA-268) (bsc#1103275)

  - CVE-2018-15470: Fixed an issue in the logic in
    oxenstored for handling writes, which allowed a guest to
    write memory unbounded leading to system-wide Denial of
    Service (DoS). (XSA-272) (bsc#1103279)

  - CVE-2018-3646: Mitigations for VMM aspects of L1
    Terminal Fault (XSA-273) (bsc#1091107)

Other bugs fixed :

  - Fixed an issue related to a domU hang on SLE12-SP3 HV
    (bsc#1108940)

  - Fixed an issue with xpti=no-dom0 not working as expected
    (bsc#1105528)

  - Fixed a kernel oops related to fs/dcache.c called by
    d_materialise_unique() (bsc#1094508)

This update was imported from the SUSE:SLE-15:Update update project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1027519"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1078292"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1091107"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1094508"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1103275"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1103276"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1103279"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1105528"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1108940"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1114405"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115040"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115045"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1115047"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen 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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  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-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-32bit-debuginfo");
  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-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:15.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/27");
  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) 2019-2020 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/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 !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", 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:"SUSE15.0", reference:"xen-debugsource-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-devel-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-libs-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-libs-debuginfo-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-tools-domU-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", reference:"xen-tools-domU-debuginfo-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-doc-html-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-libs-32bit-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-libs-32bit-debuginfo-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-tools-4.10.2_04-lp150.2.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"xen-tools-debuginfo-4.10.2_04-lp150.2.12.1") ) 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 / xen-debugsource / xen-devel / xen-doc-html / xen-libs-32bit / etc");
}
  • NASL familyMisc.
    NASL idXEN_SERVER_XSA-272.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 id112158
    published2018-08-28
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/112158
    titleXen Project Oxenstored Quota-maxentity DoS (XSA-272)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(112158);
  script_version("1.5");
  script_cvs_date("Date: 2019/11/04");

  script_cve_id("CVE-2018-15470");
  script_xref(name:"IAVB", value:"2018-B-0111");

  script_name(english:"Xen Project Oxenstored Quota-maxentity DoS (XSA-272)");
  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-272.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-2018-15470");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/28");

  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_set_attribute(attribute:"stig_severity", value:"I");
  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']['fixed_ver_display']   = '4.6.6 (changeset 753f8d9)';
fixes['4.6']['affected_ver_regex']  = '^4\\.6\\.';
fixes['4.6']['affected_changesets'] = make_list("14402dc", "45f6a27",
  "4c8d9f8", "1840f82", "a80ce17", "7d98594", "f30c9b6", "a1b8d86",
  "ff1d0b6", "3bd7cf6", "55c7bd6", "98d7948", "e0981f6", "91cf29f",
  "a0c3f80", "cf7d9d1", "170c48b", "c39cd00", "2d69b6d", "03ba272",
  "1fa0ecb", "598a375", "b7b7c4d", "ba7d011", "a544804", "2642b56",
  "03938ba", "542f711", "90dc163", "61a9fc5", "a671bd6", "365ecff",
  "237236a", "aa5a889", "3e3c11b", "8a2e1db", "cb0230a", "4336ffa",
  "3df7d47", "5ccba18", "991dd4c", "331a1af", "035c96f", "bfe8f3e",
  "4f0509d", "2f99d68", "0d3904f", "342a02f", "2d8e87e", "ac659af",
  "c1be09e", "e7b723b", "cd5232a", "f9f9634", "6981351", "12b9fca",
  "916ef0d", "055abe4", "c4333f5", "3d6970d", "a0db1f2", "6a74f4e",
  "5278a9a", "c53663a", "c5339c5", "3b96676", "2f3cde3", "acd8661",
  "5ddc3f8", "927aca7", "b4b553d", "b766574", "10898d7", "0b38930",
  "33f70b8", "cf03d32", "525c381", "4c1e2d3", "021009e", "4972c38",
  "bd461fc", "c9c1bb6", "0fbf30a", "7e20b9b", "d1618f4", "9d534c1",
  "dbb3553", "e54a8c6", "8005ed3", "9a852e0", "d779cc1", "c93bcf9",
  "15adcf3", "d7b8190", "2b1457f", "a357880", "ee23fcc", "5651015",
  "225e9c7", "3c70619", "1222333", "75bdd69", "8994cf3", "642c603",
  "c25ea9a", "feba571", "0163087", "44c2666", "db743b0", "41a5cce",
  "4e1b9e9", "4d21549", "ff4800c", "2613a1b", "8335c8a", "ab20c5c",
  "9089da9", "8edfc82", "af5b61a", "ec05090", "75263f7", "f7e273a",
  "03c7d2c", "9ce1a71", "a735c7a", "44ad7f6", "91dc902", "a065841",
  "c6e9e60", "f94c11d", "45ddc4e", "1ca93b7", "8c0c36e", "6e43623",
  "47d3e73", "ea80245", "37bb22b", "9b0c2a2", "8d3fe28", "be63d66",
  "9454e30", "aad5a67", "d8b0ebf", "f0208a4", "42b2c82", "57318e1",
  "9f22d72", "e0353b4", "76f1549", "9bac910", "c7a43e3", "913d4f8",
  "c5881c5", "b0239cd", "78fd0c3", "9079e0d", "1658a87", "22b6dfa",
  "a8cd231", "629eddd", "64c03bb", "b4660b4", "1ac8162", "747df3c",
  "5ae011e", "f974d32", "3300ad3", "d708b69");

fixes['4.7']['fixed_ver']           = '4.7.6';
fixes['4.7']['fixed_ver_display']   = '4.7.6 (changeset df66c1c)';
fixes['4.7']['affected_ver_regex']  = '^4\\.7\\.';
fixes['4.7']['affected_changesets'] = make_list("59732fd", "3f7fd2b",
  "bcbd8b9", "dfee811", "95ff4e1", "ded2a37", "87dba80", "fe028e6",
  "a51e6a3", "0e66281", "51d9780", "91ca84c", "bce2dd6", "fa807e2",
  "97aff08", "e90e243", "c0e854b", "9858a1f", "a404136", "dc111e9",
  "0873699", "280a556");

fixes['4.8']['fixed_ver']           = '4.8.5';
fixes['4.8']['fixed_ver_display']   = '4.8.5-pre (changeset 712082d)';
fixes['4.8']['affected_ver_regex']  = '^4\\.8\\.';
fixes['4.8']['affected_changesets'] = make_list("ed6fcdb", "0406164",
  "e3d0ce3", "c00fabc", "3478439", "b81b74a", "b289403", "47fbc6e",
  "ee7bcea", "df5bbf7", "d96893f", "15508b3", "790ed15", "d838957",
  "aa45015", "b149b06", "c117d09", "e343ee8", "5566272", "f049cd6",
  "6dc0bc5", "37a1b4a", "f6a31ed", "08eda97", "96bf2db", "23975f5",
  "f3b0cdb", "f5ef10d", "de172b0", "3686d09", "4aec0c7");

fixes['4.9']['fixed_ver']           = '4.9.3';
fixes['4.9']['fixed_ver_display']   = '4.9.3-pre (changeset ac3d572)';
fixes['4.9']['affected_ver_regex']  = '^4\\.9\\.';
fixes['4.9']['affected_changesets'] = make_list("8231311", "ab34a43",
  "023da62", "01b624b", "c4fda1d", "946badc", "db356a4", "0c9baf6",
  "c847824", "66a3e68", "ec32158", "6522c1c", "284c601", "3d2dc31",
  "a1b223b", "a894c9d", "d866881", "819e114", "c6055c5", "cc15a7b",
  "15124d9", "7f4a82d", "e40bfc1", "53b22ad", "ec3030f", "84dd174",
  "c4d86c6", "a6ac51a", "514785c", "f904bdd", "036006f", "f5c692a",
  "612ff3c", "555ef37", "e76d0f7", "19f4f87", "c4cb7d3", "8cdaac2",
  "7fbbedd", "46863c6", "041844b", "0a9c2bd", "5d92007", "c257e35",
  "ad08a1b", "c50b1f6", "238007d", "0b1904c", "859fc55", "1c6b8f2",
  "f51d368", "8689cd1", "fc72347", "27b0dcd", "8d874a8", "1284b90",
  "12259ff", "516ac8a", "ed217c9", "11eb72e", "3f85ebb", "1ed3466",
  "37c3cb4", "2aca1d7", "22a6433", "8a29d83", "14a2ad6", "c6d09b2",
  "e5de993", "c2029b4", "5633efa", "13cb0c2", "da140c6", "39ab89d",
  "a29695c", "74fa955", "b3277ca", "cf264eb", "809d543", "002ea4d",
  "1f183b5", "150cdd9", "f7889b3", "903f2f6", "4bbed1c", "2303a9d",
  "d674b6e", "52fa2f7", "62bd851", "c06ec81", "dbb06d3", "24fa3fa",
  "b9b5a03", "35a71c6", "b844573", "48dd543", "7866e11", "db7accf",
  "921bff4", "c147505", "dc527ff", "781e23a", "72ca580", "47d41f6",
  "7a59015", "259bee9", "6d4c4f0", "3e010f5");

fixes['4.10']['fixed_ver']           = '4.10.2';
fixes['4.10']['fixed_ver_display']   = '4.10.2-pre (changeset 56d5138)';
fixes['4.10']['affected_ver_regex']  = '^4\\.10\\.';
fixes['4.10']['affected_changesets'] = make_list("924a5ee", "5fd0bb3",
  "9e7ee94", "0de39f3", "6504045", "b4d6690", "09b6924", "2450f34",
  "227da39", "07a9be7", "dcca8f0", "8af1a79", "93017a6", "6e57d28",
  "87c83af", "b07c76f", "541a105", "6f6207f", "6feafd8", "01eb262",
  "512d3e7", "74f437f", "371149b", "3607213", "7145525", "498716e",
  "fab92fc", "bc1289f", "4ccf397", "381fdae", "d976fe5", "a645331",
  "c220240", "78a86a7", "6e0e45a", "b81a8bf", "de578bc", "3bd7966",
  "dd07d3e", "b5e9f1e", "e0da0d9", "2308158", "b2444d2", "42219af",
  "1d5a9ec", "eeb1576", "4b9dc6d", "52447b3", "7b35e78", "8d48204",
  "b3a7f2f", "fb78102", "245eaee", "18833a8", "72e5b16", "27a4161",
  "23114db", "6300cdd", "2a0913e", "daaf3dd", "c2b84e7", "908ddbb",
  "c75bbf1", "e9dc0a6", "470daef", "c9fdfbb", "49aebf4", "48ad1ab",
  "98a285c", "cb2a83f", "51b7b5d", "840d683", "ec50d21", "a035518",
  "8342e3f", "aaf66de", "7e21b75", "f155f55", "3a903b3", "2e2f337",
  "850e5ad", "13fa2a4", "ade8f98", "a7f8880", "3bb756b", "1aa6305",
  "d93ae63", "6b8d820", "f253feb");

fixes['4.11']['fixed_ver']           = '4.11.1';
fixes['4.11']['fixed_ver_display']   = '4.11.1-pre (changeset e6441a8)';
fixes['4.11']['affected_ver_regex']  = '^4\\.11\\.';
fixes['4.11']['affected_changesets'] = make_list("48fb482", "fa79f9e",
  "1d32c21", "7b420e8", "8b35b97", "cfdd4e8", "218d403", "b52017c",
  "52b8f9a", "935e9c4", "61cc876", "4254e98", "6fe9726", "33ced72",
  "7de2155", "06d2a76", "543027c", "037fe82", "353edf1", "75313e4",
  "5908b48", "bd51a64", "0a2016c", "b53e0de", "a44cf0c", "ac35e05",
  "10c5482", "4bdeedb", "da33530", "e932371", "1fd87ba");


fix = NULL;
foreach ver_branch (keys(fixes))
{
  if (version =~ fixes[ver_branch]['affected_ver_regex'])
  {
    ret = ver_compare(ver:version, fix:fixes[ver_branch]['fixed_ver']);
    if (ret < 0)
      fix = fixes[ver_branch]['fixed_ver_display'];
    else if (ret == 0)
    {
      if (empty_or_null(changeset))
        fix = fixes[ver_branch]['fixed_ver_display'];
      else
        foreach affected_changeset (fixes[ver_branch]['affected_changesets'])
          if (changeset == affected_changeset)
            fix = fixes[ver_branch]['fixed_ver_display'];
    }
  }
}

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 familyFedora Local Security Checks
    NASL idFEDORA_2018-915602DF63.NASL
    descriptionL1 Terminal Fault speculative side channel patch bundle [XSA-273, CVE-2018-3620, CVE-2018-3646] drop patches also in the bundle, which also includes Use of v2 grant tables may cause crash on ARM [XSA-268] (#1616081) x86: Incorrect MSR_DEBUGCTL handling lets guests enable BTS [XSA-269] (#1616077) oxenstored does not apply quota-maxentity [XSA-272] (#1616080) 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
    modified2018-09-04
    plugin id112234
    published2018-09-04
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/112234
    titleFedora 27 : xen (2018-915602df63) (Foreshadow)
    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-2018-915602df63.
#

include("compat.inc");

if (description)
{
  script_id(112234);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2018-15468", "CVE-2018-15469", "CVE-2018-15470", "CVE-2018-3620", "CVE-2018-3646");
  script_xref(name:"FEDORA", value:"2018-915602df63");

  script_name(english:"Fedora 27 : xen (2018-915602df63) (Foreshadow)");
  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:
"L1 Terminal Fault speculative side channel patch bundle [XSA-273,
CVE-2018-3620, CVE-2018-3646] drop patches also in the bundle, which
also includes Use of v2 grant tables may cause crash on ARM [XSA-268]
(#1616081) x86: Incorrect MSR_DEBUGCTL handling lets guests enable BTS
[XSA-269] (#1616077) oxenstored does not apply quota-maxentity
[XSA-272] (#1616080)

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-2018-915602df63"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A: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_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:"2018/08/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/04");
  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) 2018-2020 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-4.9.2-7.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 familySuSE Local Security Checks
    NASL idSUSE_SU-2018-4300-1.NASL
    descriptionThis update for xen fixes the following issues : Update to Xen 4.10.2 bug fix release (bsc#1027519). Security vulnerabilities fixed : CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, may cause a Denial of Service (DoS) affecting the entire host, or may be able to access data it is not supposed to access. (XSA-275) (bsc#1115040) CVE-2018-19965: Fixed an issue related to the INVPCID instruction in case non-canonical addresses are accessed, which may allow a guest to cause Xen to crash, resulting in a Denial of Service (DoS) affecting the entire host. (XSA-279) (bsc#1115045) CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240, which conflicted with shadow paging and allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-280) (bsc#1115047) CVE-2018-18883: Fixed an issue related to inproper restriction of nested VT-x, which allowed a guest to cause Xen to crash, resulting in a Denial of Service (DoS). (XSA-278) (bsc#1114405) CVE-2018-15468: Fixed incorrect MSR_DEBUGCTL handling, which allowed guests to enable Branch Trace Store and may cause a Denial of Service (DoS) of the entire host. (XSA-269) (bsc#1103276) CVE-2018-15469: Fixed use of v2 grant tables on ARM, which were not properly implemented and may cause a Denial of Service (DoS). (XSA-268) (bsc#1103275) CVE-2018-15470: Fixed an issue in the logic in oxenstored for handling writes, which allowed a guest to write memory unbounded leading to system-wide Denial of Service (DoS). (XSA-272) (bsc#1103279) CVE-2018-3646: Mitigations for VMM aspects of L1 Terminal Fault (XSA-273) (bsc#1091107) Other bugs fixed: Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940) Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528) Fixed a kernel oops related to fs/dcache.c called by d_materialise_unique() (bsc#1094508) 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 seen2020-03-18
    modified2019-01-02
    plugin id120196
    published2019-01-02
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/120196
    titleSUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2018:4300-1) (Foreshadow)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:4300-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(120196);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/16");

  script_cve_id("CVE-2018-15468", "CVE-2018-15469", "CVE-2018-15470", "CVE-2018-18883", "CVE-2018-19961", "CVE-2018-19962", "CVE-2018-19965", "CVE-2018-19966", "CVE-2018-3646");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2018:4300-1) (Foreshadow)");
  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 the following issues :

Update to Xen 4.10.2 bug fix release (bsc#1027519).

Security vulnerabilities fixed :

CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient
TLB flushing with AMD IOMMUs, which potentially allowed a guest to
escalate its privileges, may cause a Denial of Service (DoS) affecting
the entire host, or may be able to access data it is not supposed to
access. (XSA-275) (bsc#1115040)

CVE-2018-19965: Fixed an issue related to the INVPCID instruction in
case non-canonical addresses are accessed, which may allow a guest to
cause Xen to crash, resulting in a Denial of Service (DoS) affecting
the entire host. (XSA-279) (bsc#1115045)

CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240,
which conflicted with shadow paging and allowed a guest to cause Xen
to crash, resulting in a Denial of Service (DoS). (XSA-280)
(bsc#1115047)

CVE-2018-18883: Fixed an issue related to inproper restriction of
nested VT-x, which allowed a guest to cause Xen to crash, resulting in
a Denial of Service (DoS). (XSA-278) (bsc#1114405)

CVE-2018-15468: Fixed incorrect MSR_DEBUGCTL handling, which allowed
guests to enable Branch Trace Store and may cause a Denial of Service
(DoS) of the entire host. (XSA-269) (bsc#1103276)

CVE-2018-15469: Fixed use of v2 grant tables on ARM, which were not
properly implemented and may cause a Denial of Service (DoS).
(XSA-268) (bsc#1103275)

CVE-2018-15470: Fixed an issue in the logic in oxenstored for handling
writes, which allowed a guest to write memory unbounded leading to
system-wide Denial of Service (DoS). (XSA-272) (bsc#1103279)

CVE-2018-3646: Mitigations for VMM aspects of L1 Terminal Fault
(XSA-273) (bsc#1091107)

Other bugs fixed: Fixed an issue related to a domU hang on SLE12-SP3
HV (bsc#1108940)

Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528)

Fixed a kernel oops related to fs/dcache.c called by
d_materialise_unique() (bsc#1094508)

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=1027519"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1078292"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1091107"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1094508"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103275"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103276"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103279"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1105528"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1108940"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1114405"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1115040"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1115045"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1115047"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-15468/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-15469/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-15470/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-18883/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-19961/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-19962/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-19965/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-19966/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-3646/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20184300-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?3af96718"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Server Applications 15:zypper in -t
patch SUSE-SLE-Module-Server-Applications-15-2018-3063=1

SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch
SUSE-SLE-Module-Basesystem-15-2018-3063=1"
  );
  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_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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  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-devel");
  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:15");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/02");
  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) 2019-2020 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:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "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 == "SLES15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP0", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-debugsource-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-devel-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-tools-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-tools-debuginfo-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-debugsource-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-libs-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"xen-debugsource-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"xen-libs-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-4.10.2_04-3.9.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.10.2_04-3.9.1")) 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 familySuSE Local Security Checks
    NASL idOPENSUSE-2018-1331.NASL
    descriptionThis update for xen fixes the following issues : XEN was updated to the Xen 4.9.3 bug fix only release (bsc#1027519) - CVE-2018-17963: qemu_deliver_packet_iov accepted packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact. (bsc#1111014) - CVE-2018-15470: oxenstored might not have enforced the configured quota-maxentity. This allowed a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS. (XSA-272) (bsc#1103279) - CVE-2018-15469: ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash). (XSA-268) (bsc#1103275) Note that SUSE does not ship ARM Xen, so we are not affected. - CVE-2018-15468: The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must only be available to fully trusted guests. Unfortunately, in the case that vPMU is disabled, all value checking was skipped, allowing the guest to choose any MSR_DEBUGCTL setting it likes. A malicious or buggy guest administrator (on Intel x86 HVM or PVH) can lock up the entire host, causing a Denial of Service. (XSA-269) (bsc#1103276) - CVE-2018-3646: Systems with microprocessors utilizing speculative execution and address translations may have allowed unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis. (XSA-273) (bsc#1091107) Non security issues fixed : - The affinity reporting via
    last seen2020-06-05
    modified2018-10-31
    plugin id118563
    published2018-10-31
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118563
    titleopenSUSE Security Update : xen (openSUSE-2018-1331) (Foreshadow)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-3490-1.NASL
    descriptionThis update for xen fixes the following issues : XEN was updated to the Xen 4.9.3 bug fix only release (bsc#1027519) CVE-2018-17963: qemu_deliver_packet_iov accepted packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact. (bsc#1111014) CVE-2018-15470: oxenstored might not have enforced the configured quota-maxentity. This allowed a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS. (XSA-272) (bsc#1103279) CVE-2018-15469: ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash). (XSA-268) (bsc#1103275) Note that SUSE does not ship ARM Xen, so we are not affected. CVE-2018-15468: The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must only be available to fully trusted guests. Unfortunately, in the case that vPMU is disabled, all value checking was skipped, allowing the guest to choose any MSR_DEBUGCTL setting it likes. A malicious or buggy guest administrator (on Intel x86 HVM or PVH) can lock up the entire host, causing a Denial of Service. (XSA-269) (bsc#1103276) CVE-2018-3646: Systems with microprocessors utilizing speculative execution and address translations may have allowed unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis. (XSA-273) (bsc#1091107) Non security issues fixed: The affinity reporting via
    last seen2020-06-01
    modified2020-06-02
    plugin id118491
    published2018-10-29
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118491
    titleSUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:3490-1) (Foreshadow)
  • 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 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)

References