SUSE SLES12 Security Update : ovmf (SUSE-SU-2018:4194-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:4194-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(119808);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/15");

  script_cve_id(
    "CVE-2017-5731",
    "CVE-2017-5732",
    "CVE-2017-5733",
    "CVE-2017-5734",
    "CVE-2017-5735",
    "CVE-2018-3613"
  );

  script_name(english:"SUSE SLES12 Security Update : ovmf (SUSE-SU-2018:4194-1)");

  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 ovmf fixes the following issues :

Security issues fixed :

CVE-2018-3613: Fixed AuthVariable Timestamp zeroing issue on
APPEND_WRITE (bsc#1115916).

CVE-2017-5731: Fixed privilege escalation via processing of malformed
files in TianoCompress.c (bsc#1115917).

CVE-2017-5732: Fixed privilege escalation via processing of malformed
files in BaseUefiDecompressLib.c (bsc#1115917).

CVE-2017-5733: Fixed privilege escalation via heap-based buffer
overflow in MakeTable() function (bsc#1115917).

CVE-2017-5734: Fixed privilege escalation via stack-based buffer
overflow in MakeTable() function (bsc#1115917).

CVE-2017-5735: Fixed privilege escalation via heap-based buffer
overflow in Decode() function (bsc#1115917).

Non security issues fixed: Fixed an issue with the default owner of
PK/KEK/db/dbx and make the auto-enrollment only happen at the very
first time. (bsc#1117998)

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=1115916");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1115917");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1117998");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-5731/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-5732/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-5733/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-5734/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-5735/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-3613/");
  # https://www.suse.com/support/update/announcement/2018/suse-su-20184194-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?98d02614");
  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 Linux Enterprise Server 12-SP4:zypper in -t patch
SUSE-SLE-SERVER-12-SP4-2018-2989=1

SUSE Linux Enterprise Desktop 12-SP4:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP4-2018-2989=1");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/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:L/PR:L/UI:N/S:U/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-2017-5735");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2018-3613");

  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:"2019/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:ovmf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:ovmf-tools");
  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) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/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:"ovmf-2017+git1510945757.b2662641d5-3.5.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"ovmf-tools-2017+git1510945757.b2662641d5-3.5.1")) 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, "ovmf");
}