EulerOS Virtualization 2.5.4 : kernel (EulerOS-SA-2019-1253)

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

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

if (description)
{
  script_id(123721);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");

  script_cve_id(
    "CVE-2017-18360",
    "CVE-2018-18281",
    "CVE-2018-18559",
    "CVE-2018-19824"
  );

  script_name(english:"EulerOS Virtualization 2.5.4 : kernel (EulerOS-SA-2019-1253)");

  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 :

  - A division-by-zero in set_termios(), when debugging is
    enabled, was found in the Linux kernel. When the
    [io_ti] driver is loaded, a local unprivileged attacker
    can request incorrect high transfer speed in the
    change_port_settings() in the
    drivers/usb/serial/io_ti.c so that the divisor value
    becomes zero and causes a system crash resulting in a
    denial of service.i1/4^CVE-2017-18360i1/4%0

  - A flaw was found In the Linux kernel, through version
    4.19.6, where a local user could exploit a
    use-after-free in the ALSA driver by supplying a
    malicious USB Sound device (with zero interfaces) that
    is mishandled in usb_audio_probe in sound/usb/card.c.
    An attacker could corrupt memory and possibly escalate
    privileges if the attacker is able to have physical
    access to the system.i1/4^CVE-2018-19824i1/4%0

  - Since Linux kernel version 3.2, the mremap() syscall
    performs TLB flushes after dropping pagetable locks. If
    a syscall such as ftruncate() removes entries from the
    pagetables of a task that is in the middle of mremap(),
    a stale TLB entry can remain for a short time that
    permits access to a physical page after it has been
    released back to the page allocator and
    reused.i1/4^CVE-2018-18281i1/4%0

  - A use-after-free flaw can occur in the Linux kernel due
    to a race condition between packet_do_bind() and
    packet_notifier() functions called for an AF_PACKET
    socket. An unprivileged, local user could use this flaw
    to induce kernel memory corruption on the system,
    leading to an unresponsive system or to a crash. Due to
    the nature of the flaw, privilege escalation cannot be
    fully ruled out.i1/4^CVE-2018-18559i1/4%0

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-2019-1253
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b1ef0b72");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-18559");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/04");

  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:2.5.4");
  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) 2019-2024 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/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 != "2.5.4") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.5.4");
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-3.10.0-862.14.1.1_62",
        "kernel-devel-3.10.0-862.14.1.1_62",
        "kernel-headers-3.10.0-862.14.1.1_62",
        "kernel-tools-3.10.0-862.14.1.1_62",
        "kernel-tools-libs-3.10.0-862.14.1.1_62",
        "kernel-tools-libs-devel-3.10.0-862.14.1.1_62"];

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");
}