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nessusUbuntu Security Notice (C) 2017-2024 Canonical, Inc. / NASL script (C) 2017-2024 and is owned by Tenable, Inc. or an Affiliate thereof.UBUNTU_USN-3289-1.NASL
HistoryMay 17, 2017 - 12:00 a.m.

Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-3289-1)

2017-05-1700:00:00
Ubuntu Security Notice (C) 2017-2024 Canonical, Inc. / NASL script (C) 2017-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
59

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

8.3

Confidence

Low

EPSS

0.011

Percentile

85.1%

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3289-1 advisory.

Li Qiang discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside     the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7377,     CVE-2017-8086)

Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7718)

Li Qiang and Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device when being used with     a VNC connection. A privileged attacker inside the guest could use this issue to cause QEMU to crash,     resulting in a denial of service, or possibly execute arbitrary code on the host. In the default     installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile.
(CVE-2017-7980)

Jiang Xin discovered that QEMU incorrectly handled the audio subsystem. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-8309)

Jiang Xin discovered that QEMU incorrectly handled the input subsystem. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only     affected Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-8379)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3289-1. 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(100250);
  script_version("3.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2017-7377",
    "CVE-2017-7718",
    "CVE-2017-7980",
    "CVE-2017-8086",
    "CVE-2017-8309",
    "CVE-2017-8379"
  );
  script_xref(name:"USN", value:"3289-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-3289-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-3289-1 advisory.

    Li Qiang discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside
    the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7377,
    CVE-2017-8086)

    Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the
    guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7718)

    Li Qiang and Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device when being used with
    a VNC connection. A privileged attacker inside the guest could use this issue to cause QEMU to crash,
    resulting in a denial of service, or possibly execute arbitrary code on the host. In the default
    installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile.
    (CVE-2017-7980)

    Jiang Xin discovered that QEMU incorrectly handled the audio subsystem. A privileged attacker inside the
    guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-8309)

    Jiang Xin discovered that QEMU incorrectly handled the input subsystem. A privileged attacker inside the
    guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only
    affected Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-8379)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-3289-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
  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-2017-7980");

  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:"2017/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user-binfmt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-block-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-keymaps");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-kvm");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2017-2024 Canonical, Inc. / NASL script (C) 2017-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('14.04' >< os_release || '16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04', 'Ubuntu ' + os_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);

var pkgs = [
    {'osver': '14.04', 'pkgname': 'qemu', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-common', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-guest-agent', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-keymaps', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-kvm', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-aarch64', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-arm', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-common', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-mips', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-misc', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-ppc', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-sparc', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-system-x86', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-user', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-user-static', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '14.04', 'pkgname': 'qemu-utils', 'pkgver': '2.0.0+dfsg-2ubuntu1.34'},
    {'osver': '16.04', 'pkgname': 'qemu', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-block-extra', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-guest-agent', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-kvm', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-aarch64', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-arm', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-common', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-mips', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-misc', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-ppc', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-s390x', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-sparc', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-system-x86', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-user', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-user-binfmt', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-user-static', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'},
    {'osver': '16.04', 'pkgname': 'qemu-utils', 'pkgver': '1:2.5+dfsg-5ubuntu10.14'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'qemu / qemu-block-extra / qemu-common / qemu-guest-agent / etc');
}

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

8.3

Confidence

Low

EPSS

0.011

Percentile

85.1%