EulerOS Virtualization 2.5.0 : kernel (EulerOS-SA-2018-1246)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(117555);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id(
    "CVE-2017-18203",
    "CVE-2017-18208",
    "CVE-2018-1000026",
    "CVE-2018-6927"
  );

  script_name(english:"EulerOS Virtualization 2.5.0 : kernel (EulerOS-SA-2018-1246)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the kernel packages installed, the
EulerOS Virtualization installation on the remote host is affected by
the following vulnerabilities :

  - Improper validation in the bnx2x network card driver of
    the Linux kernel version 4.15 can allow for denial of
    service (DoS) attacks via a packet with a gso_size
    larger than ~9700 bytes. Untrusted guest VMs can
    exploit this vulnerability in the host machine, causing
    a crash in the network card.(CVE-2018-1000026)

  - The futex_requeue function in kernel/futex.c in the
    Linux kernel, before 4.14.15, might allow attackers to
    cause a denial of service (integer overflow) or
    possibly have unspecified other impacts by triggering a
    negative wake or requeue value. Due to the nature of
    the flaw, privilege escalation cannot be fully ruled
    out, although we believe it is unlikely.(CVE-2018-6927)

  - The madvise_willneed function in the Linux kernel
    allows local users to cause a denial of service
    (infinite loop) by triggering use of MADVISE_WILLNEED
    for a DAX mapping.(CVE-2017-18208)

  - The Linux kernel, before version 4.14.3, is vulnerable
    to a denial of service in
    drivers/md/dm.c:dm_get_from_kobject() which can be
    caused by local users leveraging a race condition with
    __dm_destroy() during creation and removal of DM
    devices. Only privileged local users (with
    CAP_SYS_ADMIN capability) can directly perform the
    ioctl operations for dm device creation and removal and
    this would typically be outside the direct control of
    the unprivileged attacker.(CVE-2017-18203)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2018-1246
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3151d153");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.5.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2018-2021 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/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "2.5.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.5.0");
if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["kernel-3.10.0-327.61.59.66_41",
        "kernel-devel-3.10.0-327.61.59.66_41",
        "kernel-headers-3.10.0-327.61.59.66_41",
        "kernel-tools-3.10.0-327.61.59.66_41",
        "kernel-tools-libs-3.10.0-327.61.59.66_41",
        "kernel-tools-libs-devel-3.10.0-327.61.59.66_41"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
}