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nessusThis script is Copyright (C) 2018-2021 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2018-1362-1.NASL
HistoryMay 23, 2018 - 12:00 a.m.

SUSE SLES12 Security Update : qemu (SUSE-SU-2018:1362-1) (Spectre)

2018-05-2300:00:00
This script is Copyright (C) 2018-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
18

This update for qemu fixes several issues. This security issue was fixed :

  • CVE-2018-3639: Spectre v4 vulnerability mitigation support for KVM guests (bsc#1092885). Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. This patch permits the new x86 cpu feature flag named ‘ssbd’ to be presented to the guest, given that the host has this feature, and KVM exposes it to the guest as well.
    For this feature to be enabled please use the qemu commandline

    -cpu $MODEL,+spec-ctrl,+ssbd so the guest OS can take advantage of the feature. spec-ctrl and ssbd support is also required in the host. This feature was added :

  • Add support for block resize support for xen disks through the monitor

The update package also includes non-security fixes. See advisory for details.

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.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:1362-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(110029);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/15");

  script_cve_id("CVE-2018-3639");

  script_name(english:"SUSE SLES12 Security Update : qemu (SUSE-SU-2018:1362-1) (Spectre)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"This update for qemu fixes several issues. This security issue was
fixed :

  - CVE-2018-3639: Spectre v4 vulnerability mitigation
    support for KVM guests (bsc#1092885). Systems with
    microprocessors utilizing speculative execution and
    speculative execution of memory reads before the
    addresses of all prior memory writes are known may allow
    unauthorized disclosure of information to an attacker
    with local user access via a side-channel analysis. This
    patch permits the new x86 cpu feature flag named 'ssbd'
    to be presented to the guest, given that the host has
    this feature, and KVM exposes it to the guest as well.
    For this feature to be enabled please use the qemu
    commandline

    -cpu $MODEL,+spec-ctrl,+ssbd so the guest OS can take
    advantage of the feature. spec-ctrl and ssbd support is
    also required in the host. This feature was added :

  - Add support for block resize support for xen disks
    through the monitor

The update package also includes non-security fixes. See advisory for
details.

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=1079405"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1092885"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-3639/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20181362-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e9a14854"
  );
  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 7:zypper in -t patch
SUSE-OpenStack-Cloud-7-2018-946=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch
SUSE-SLE-SAP-12-SP2-2018-946=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2018-946=1

SUSE Enterprise Storage 4:zypper in -t patch SUSE-Storage-4-2018-946=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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-curl-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-rbd-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-ssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-block-ssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-guest-agent-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-lang");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-s390");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-s390-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-x86");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:qemu-x86-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/05/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/23");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 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/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);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-block-rbd-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-block-rbd-debuginfo-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-x86-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"qemu-x86-debuginfo-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"s390x", reference:"qemu-s390-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"s390x", reference:"qemu-s390-debuginfo-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-curl-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-curl-debuginfo-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-ssh-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-block-ssh-debuginfo-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-debugsource-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-guest-agent-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-guest-agent-debuginfo-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-kvm-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-lang-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-tools-2.6.2-41.40.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"qemu-tools-debuginfo-2.6.2-41.40.1")) 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, "qemu");
}
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