openSUSE Security Update : xen (openSUSE-2020-2331)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2020-2331.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(145322);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/07/12");

  script_cve_id("CVE-2020-29480", "CVE-2020-29481", "CVE-2020-29483", "CVE-2020-29484", "CVE-2020-29566", "CVE-2020-29570", "CVE-2020-29571");

  script_name(english:"openSUSE Security Update : xen (openSUSE-2020-2331)");
  script_summary(english:"Check for the openSUSE-2020-2331 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 :

  - CVE-2020-29480: Fixed an issue which could have allowed
    leak of non-sensitive data to administrator guests
    (bsc#117949 XSA-115).

  - CVE-2020-29481: Fixed an issue which could have allowd
    to new domains to inherit existing node permissions
    (bsc#1179498 XSA-322). 

  - CVE-2020-29483: Fixed an issue where guests could
    disturb domain cleanup (bsc#1179502 XSA-325).

  - CVE-2020-29484: Fixed an issue where guests could crash
    xenstored via watchs (bsc#1179501 XSA-324). 

  - CVE-2020-29566: Fixed an undue recursion in x86 HVM
    context switch code (bsc#1179506 XSA-348).

  - CVE-2020-29570: Fixed an issue where FIFO event channels
    control block related ordering (bsc#1179514 XSA-358).

  - CVE-2020-29571: Fixed an issue where FIFO event channels
    control structure ordering (bsc#1179516 XSA-359).

  - Fixed an issue where dump-core shows missing nr_pages
    during core (bsc#1176782).

  - Multiple other bugs (bsc#1027519)

This update was imported from the SUSE:SLE-15-SP2: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=1176782"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1179496"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1179498"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1179501"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1179502"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1179506"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1179514"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1179516"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/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: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:"cvss_score_source", value:"CVE-2020-29481");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell: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:"p-cpe:/a:novell:opensuse:xen-tools-xendomains-wait-disk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.2");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/12/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/12/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/01/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2021 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\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.2", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.2", reference:"xen-debugsource-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"xen-devel-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"xen-libs-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"xen-libs-debuginfo-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"xen-tools-domU-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"xen-tools-domU-debuginfo-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"xen-tools-xendomains-wait-disk-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"xen-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"xen-doc-html-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"xen-libs-32bit-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"xen-libs-32bit-debuginfo-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"xen-tools-4.13.2_06-lp152.2.21.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"xen-tools-debuginfo-4.13.2_06-lp152.2.21.1") ) 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");
}