SUSE SLES12 Security Update : xen (SUSE-SU-2021:1648-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2021:1648-1.
# The text itself is copyright (C) SUSE.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(149801);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/26");

  script_cve_id("CVE-2021-28689");

  script_name(english:"SUSE SLES12 Security Update : xen (SUSE-SU-2021:1648-1)");

  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 :

Security issue fixed :

CVE-2021-28689: Fixed some x86 speculative vulnerabilities with bare
(non-shim) 32-bit PV guests (XSA-370) (bsc#1185104)

Make sure xencommons is in a format as expected by fillup.
(bsc#1185682)

Each comment needs to be followed by an enabled key. Otherwise fillup
will remove manually enabled key=value pairs, along with everything
that looks like a stale comment, during next pkg update

A recent systemd update caused a regression in xenstored.service
systemd now fails to track units that use systemd-notify (bsc#1183790)

Added a delay between the call to systemd-notify and the final exit of
the wrapper script (bsc#1185021, bsc#1185196)

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=1183790");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1185021");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1185104");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1185196");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1185682");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-28689/");
  # https://www.suse.com/support/update/announcement/2021/suse-su-20211648-1
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f2b14cd5");
  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 OpenStack Cloud Crowbar 9 :

zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-9-2021-1648=1

SUSE OpenStack Cloud 9 :

zypper in -t patch SUSE-OpenStack-Cloud-9-2021-1648=1

SUSE Linux Enterprise Server for SAP 12-SP4 :

zypper in -t patch SUSE-SLE-SAP-12-SP4-2021-1648=1

SUSE Linux Enterprise Server 12-SP4-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP4-LTSS-2021-1648=1");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/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:L/PR:L/UI:N/S:U/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-2021-28689");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2021/05/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-html");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"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) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);


sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-debugsource-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-doc-html-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-libs-32bit-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-libs-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-libs-debuginfo-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-tools-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-tools-debuginfo-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-tools-domU-4.11.4_18-2.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.11.4_18-2.54.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
  else security_note(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen");
}