Oracle Linux 6 : microcode_ctl (ELSA-2018-4019) (Spectre)

2018-01-23T00:00:00
ID ORACLELINUX_ELSA-2018-4019.NASL
Type nessus
Reporter Tenable
Modified 2018-02-02T00:00:00

Description

Description of changes:

[1:1.17-25.4.0.2] - Revert: early microcode load to allow updating Broadwell model 79 - Revert: Make sure 'modprobe microcode' is not executed on Broadwell model 79 - Revert: Run dracut upon microcode update - Revert updated Intel 20180108 microcode for CPUIDs: {CVE-2017-5715} 306c3 (06-3c-03 rev 0x23, Haswell) 306d4 (06-3d-04 rev 0x28, Broadwell) 306f2 (06-3f-02 rev 0x3b, Haswell) 306f4 (06-3f-04 rev 0x10, Haswell) 306e4 (06-3e-04 rev 0x42a, Ivy Bridge) 40651 (06-45-01 rev 0x21, Haswell) 40661 (06-46-01 rev 0x18, Haswell) 40671 (06-47-01 rev 0x1b, Broadwell) 406e3 (06-4e-03 rev 0xc2, Skylake) 406f1 (06-4f-01 rev 0xb000025, Broadwell) 50654 (06-55-04 rev 0x200003c, Skylake) 50662 (06-56-02 rev 0x14, Broadwell) 50663 (06-56-03 rev 0x7000011, Broadwell) 506e3 (06-5e-03 rev 0xc2, Skylake) 706a1 (06-7a-01 rev 0x22) 806e9 (06-8e-09 rev 0x80, Kaby Lake) 806ea (06-8e-0a rev 0x80) 906e9 (06-9e-09 rev 0x80, Kaby Lake) 906ea (06-9e-0a rev 0x80) 906eb (06-9e-0b rev 0x80)

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2018-4019.
#

include("compat.inc");

if (description)
{
  script_id(106242);
  script_version("$Revision: 3.4 $");
  script_cvs_date("$Date: 2018/02/02 16:15:51 $");

  script_cve_id("CVE-2017-5715");
  script_osvdb_id(171897);
  script_xref(name:"IAVA", value:"2018-A-0020");

  script_name(english:"Oracle Linux 6 : microcode_ctl (ELSA-2018-4019) (Spectre)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Description of changes:

[1:1.17-25.4.0.2]
- Revert:  early microcode load to allow updating Broadwell model 79
- Revert: Make sure 'modprobe microcode' is not executed on Broadwell 
model 79
- Revert: Run dracut upon microcode update
- Revert updated Intel 20180108 microcode for CPUIDs: {CVE-2017-5715}
   306c3 (06-3c-03 rev 0x23, Haswell) 
   306d4 (06-3d-04 rev 0x28, Broadwell) 
   306f2 (06-3f-02 rev 0x3b, Haswell) 
   306f4 (06-3f-04 rev 0x10, Haswell) 
   306e4 (06-3e-04 rev 0x42a, Ivy Bridge) 
   40651 (06-45-01 rev 0x21, Haswell) 
   40661 (06-46-01 rev 0x18, Haswell) 
   40671 (06-47-01 rev 0x1b, Broadwell) 
   406e3 (06-4e-03 rev 0xc2, Skylake) 
   406f1 (06-4f-01 rev 0xb000025, Broadwell) 
   50654 (06-55-04 rev 0x200003c, Skylake) 
   50662 (06-56-02 rev 0x14, Broadwell) 
   50663 (06-56-03 rev 0x7000011, Broadwell) 
   506e3 (06-5e-03 rev 0xc2, Skylake) 
   706a1 (06-7a-01 rev 0x22) 
   806e9 (06-8e-09 rev 0x80, Kaby Lake) 
   806ea (06-8e-0a rev 0x80) 
   906e9 (06-9e-09 rev 0x80, Kaby Lake)
   906ea (06-9e-0a rev 0x80) 
   906eb (06-9e-0b rev 0x80)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2018-January/007467.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected microcode_ctl 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:F/RL:ND/RC:ND");
  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:F/RL:X/RC:X");
  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:oracle:linux:microcode_ctl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/01/22");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/23");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 Tenable Network Security, Inc.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !eregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = eregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! ereg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle Linux " + 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, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL6", reference:"microcode_ctl-1.17-25.4.0.2.el6_9")) 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, "microcode_ctl");
}