Ubuntu 18.04 LTS / 19.04 : linux, linux-hwe, linux-azure, linux-gcp, linux-kvm, linux-raspi2, (USN-4093-1)

2019-08-14T00:00:00
ID UBUNTU_USN-4093-1.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-02-02T00:00:00

Description

It was discovered that a heap buffer overflow existed in the Marvell Wireless LAN device driver for the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-10126)

Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors incorrectly handle SWAPGS instructions during speculative execution. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-1125)

It was discovered that the PowerPC dlpar implementation in the Linux kernel did not properly check for allocation errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-12614)

It was discovered that a NULL pointer dereference vulnerability existed in the Near-field communication (NFC) implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-12984)

Jann Horn discovered a use-after-free vulnerability in the Linux kernel when accessing LDT entries in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-13233)

Jann Horn discovered that the ptrace implementation in the Linux kernel did not properly record credentials in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. (CVE-2019-13272)

It was discovered that the Marvell Wireless LAN device driver in the Linux kernel did not properly validate the BSS descriptor. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-3846).

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4093-1. 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(127888);
  script_version("1.5");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2019-10126", "CVE-2019-1125", "CVE-2019-12614", "CVE-2019-12984", "CVE-2019-13233", "CVE-2019-13272", "CVE-2019-3846");
  script_xref(name:"USN", value:"4093-1");

  script_name(english:"Ubuntu 18.04 LTS / 19.04 : linux, linux-hwe, linux-azure, linux-gcp, linux-kvm, linux-raspi2, (USN-4093-1)");
  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 heap buffer overflow existed in the Marvell
Wireless LAN device driver for the Linux kernel. An attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2019-10126)

Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors
incorrectly handle SWAPGS instructions during speculative execution. A
local attacker could use this to expose sensitive information (kernel
memory). (CVE-2019-1125)

It was discovered that the PowerPC dlpar implementation in the Linux
kernel did not properly check for allocation errors in some
situations. A local attacker could possibly use this to cause a denial
of service (system crash). (CVE-2019-12614)

It was discovered that a NULL pointer dereference vulnerability
existed in the Near-field communication (NFC) implementation in the
Linux kernel. A local attacker could use this to cause a denial of
service (system crash). (CVE-2019-12984)

Jann Horn discovered a use-after-free vulnerability in the Linux
kernel when accessing LDT entries in some situations. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2019-13233)

Jann Horn discovered that the ptrace implementation in the Linux
kernel did not properly record credentials in some situations. A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2019-13272)

It was discovered that the Marvell Wireless LAN device driver in the
Linux kernel did not properly validate the BSS descriptor. A local
attacker could possibly use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2019-3846).

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/4093-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-3846");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Linux Polkit pkexec helper PTRACE_TRACEME local root exploit');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp");
  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-hwe-18.04");
  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-generic-lpae-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm");
  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-lowlatency-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/14");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2020 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);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(18\.04|19\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 18.04 / 19.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2019-10126", "CVE-2019-1125", "CVE-2019-12614", "CVE-2019-12984", "CVE-2019-13233", "CVE-2019-13272", "CVE-2019-3846");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-4093-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-1014-azure", pkgver:"5.0.0-1014.14~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-25-generic", pkgver:"5.0.0-25.26~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-25-generic-lpae", pkgver:"5.0.0-25.26~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-25-lowlatency", pkgver:"5.0.0-25.26~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-azure", pkgver:"5.0.0.1014.25")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic-hwe-18.04", pkgver:"5.0.0.25.82")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic-lpae-hwe-18.04", pkgver:"5.0.0.25.82")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-lowlatency-hwe-18.04", pkgver:"5.0.0.25.82")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-snapdragon-hwe-18.04", pkgver:"5.0.0.25.82")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-virtual-hwe-18.04", pkgver:"5.0.0.25.82")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1013-gcp", pkgver:"5.0.0-1013.13")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1013-kvm", pkgver:"5.0.0-1013.14")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1014-azure", pkgver:"5.0.0-1014.14")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1014-raspi2", pkgver:"5.0.0-1014.14")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1018-snapdragon", pkgver:"5.0.0-1018.19")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-25-generic", pkgver:"5.0.0-25.26")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-25-generic-lpae", pkgver:"5.0.0-25.26")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-25-lowlatency", pkgver:"5.0.0-25.26")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-azure", pkgver:"5.0.0.1014.13")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-gcp", pkgver:"5.0.0.1013.13")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-generic", pkgver:"5.0.0.25.26")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-generic-lpae", pkgver:"5.0.0.25.26")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-gke", pkgver:"5.0.0.1013.13")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-kvm", pkgver:"5.0.0.1013.13")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-lowlatency", pkgver:"5.0.0.25.26")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-raspi2", pkgver:"5.0.0.1014.11")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-snapdragon", pkgver:"5.0.0.1018.11")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-virtual", pkgver:"5.0.0.25.26")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-5.0-azure / linux-image-5.0-gcp / etc");
}