Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3697-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3697-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(110898);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/05/11");

  script_cve_id("CVE-2018-1130", "CVE-2018-11508", "CVE-2018-5750", "CVE-2018-5803", "CVE-2018-6927", "CVE-2018-7755", "CVE-2018-7757");
  script_xref(name:"USN", value:"3697-1");

  script_name(english:"Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3697-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description",
    value:
"It was discovered that a NULL pointer dereference vulnerability
existed in the DCCP protocol implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system
crash). (CVE-2018-1130)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation
for 64 bit Linux kernels did not properly initialize memory returned
to user space in some situations. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-11508)

Wang Qize discovered that an information disclosure vulnerability
existed in the SMBus driver for ACPI Embedded Controllers in the Linux
kernel. A local attacker could use this to expose sensitive
information (kernel pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux
kernel did not properly validate userspace provided payload lengths in
some situations. A local attacker could use this to cause a denial of
service (system crash). (CVE-2018-5803)

It was discovered that an integer overflow error existed in the futex
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2018-6927)

It was discovered that an information leak vulnerability existed in
the floppy driver in the Linux kernel. A local attacker could use this
to expose sensitive information (kernel memory). (CVE-2018-7755)

It was discovered that a memory leak existed in the SAS driver
subsystem of the Linux kernel. A local attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2018-7757).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/3697-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
  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:H/A:H");
  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:canonical:ubuntu_linux:linux-image-4.13-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2018-2023 Canonical, Inc. / NASL script (C) 2018-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("ksplice.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(17\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 17.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2018-1130", "CVE-2018-11508", "CVE-2018-5750", "CVE-2018-5803", "CVE-2018-6927", "CVE-2018-7755", "CVE-2018-7757");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-3697-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

var flag = 0;

if (ubuntu_check(osver:"17.10", pkgname:"linux-image-4.13.0-1023-raspi2", pkgver:"4.13.0-1023.24")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"linux-image-4.13.0-46-generic", pkgver:"4.13.0-46.51")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"linux-image-4.13.0-46-generic-lpae", pkgver:"4.13.0-46.51")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"linux-image-4.13.0-46-lowlatency", pkgver:"4.13.0-46.51")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"linux-image-generic", pkgver:"4.13.0.46.49")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"linux-image-generic-lpae", pkgver:"4.13.0.46.49")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"linux-image-lowlatency", pkgver:"4.13.0.46.49")) flag++;
if (ubuntu_check(osver:"17.10", pkgname:"linux-image-raspi2", pkgver:"4.13.0.1023.21")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-4.13-generic / linux-image-4.13-generic-lpae / etc");
}