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nessusThis script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.OPENSUSE-2020-1844.NASL
HistoryNov 06, 2020 - 12:00 a.m.

openSUSE Security Update : xen (openSUSE-2020-1844)

2020-11-0600:00:00
This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
14

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%

This update for xen fixes the following issues :

  • bsc#1177409 - VUL-0: CVE-2020-27673: xen: x86 PV guest INVLPG-like flushes may leave stale TLB entries (XSA-286)

  • bsc#1177412 - VUL-0: CVE-2020-27672: xen: Race condition in Xen mapping code (XSA-345)

  • bsc#1177413 - VUL-0: CVE-2020-27671: xen: undue deferral of IOMMU TLB flushes (XSA-346)

  • bsc#1177414 - VUL-0: CVE-2020-27670: xen: unsafe AMD IOMMU page table updates (XSA-347)

This update was imported from the SUSE:SLE-15-SP1:Update update project.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2020-1844.
#
# The text description of this plugin is (C) SUSE LLC.
#

include('compat.inc');

if (description)
{
  script_id(142526);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/09");

  script_cve_id(
    "CVE-2020-27670",
    "CVE-2020-27671",
    "CVE-2020-27672",
    "CVE-2020-27673"
  );

  script_name(english:"openSUSE Security Update : xen (openSUSE-2020-1844)");

  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 :

  - bsc#1177409 - VUL-0: CVE-2020-27673: xen: x86 PV guest
    INVLPG-like flushes may leave stale TLB entries
    (XSA-286)

  - bsc#1177412 - VUL-0: CVE-2020-27672: xen: Race condition
    in Xen mapping code (XSA-345)

  - bsc#1177413 - VUL-0: CVE-2020-27671: xen: undue deferral
    of IOMMU TLB flushes (XSA-346)

  - bsc#1177414 - VUL-0: CVE-2020-27670: xen: unsafe AMD
    IOMMU page table updates (XSA-347)

This update was imported from the SUSE:SLE-15-SP1:Update update
project.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1177409");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1177412");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1177413");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1177414");
  script_set_attribute(attribute:"solution", value:
"Update the affected xen packages.");
  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:"cvss_score_source", value:"CVE-2020-27672");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-27671");

  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:"2020/10/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/06");

  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:15.1");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", 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:"SUSE15.1", reference:"xen-debugsource-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"xen-devel-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"xen-libs-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"xen-libs-debuginfo-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"xen-tools-domU-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"xen-tools-domU-debuginfo-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"xen-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"xen-doc-html-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"xen-libs-32bit-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"xen-libs-32bit-debuginfo-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"xen-tools-4.12.3_10-lp151.2.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", cpu:"x86_64", reference:"xen-tools-debuginfo-4.12.3_10-lp151.2.27.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(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");
}
VendorProductVersionCPE
novellopensusexenp-cpe:/a:novell:opensuse:xen
novellopensusexen-debugsourcep-cpe:/a:novell:opensuse:xen-debugsource
novellopensusexen-develp-cpe:/a:novell:opensuse:xen-devel
novellopensusexen-doc-htmlp-cpe:/a:novell:opensuse:xen-doc-html
novellopensusexen-libsp-cpe:/a:novell:opensuse:xen-libs
novellopensusexen-libs-32bitp-cpe:/a:novell:opensuse:xen-libs-32bit
novellopensusexen-libs-32bit-debuginfop-cpe:/a:novell:opensuse:xen-libs-32bit-debuginfo
novellopensusexen-libs-debuginfop-cpe:/a:novell:opensuse:xen-libs-debuginfo
novellopensusexen-toolsp-cpe:/a:novell:opensuse:xen-tools
novellopensusexen-tools-debuginfop-cpe:/a:novell:opensuse:xen-tools-debuginfo
Rows per page:
1-10 of 131

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%