7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.011 Low
EPSS
Percentile
84.9%
It was discovered that the X.Org X server incorrectly handled certain lengths. An attacker able to connect to an X server, either locally or remotely, could use these issues to crash the server, or possibly execute arbitrary code.
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-3456-1. 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(103921);
script_version("3.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");
script_cve_id(
"CVE-2017-12176",
"CVE-2017-12177",
"CVE-2017-12178",
"CVE-2017-12179",
"CVE-2017-12180",
"CVE-2017-12181",
"CVE-2017-12182",
"CVE-2017-12183",
"CVE-2017-12184",
"CVE-2017-12185",
"CVE-2017-12186",
"CVE-2017-12187"
);
script_xref(name:"USN", value:"3456-1");
script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : X.Org X server vulnerabilities (USN-3456-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"It was discovered that the X.Org X server incorrectly handled certain
lengths. An attacker able to connect to an X server, either locally or
remotely, could use these issues to crash the server, or possibly
execute arbitrary code.
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://ubuntu.com/security/notices/USN-3456-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:L/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-2017-12187");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/24");
script_set_attribute(attribute:"patch_publication_date", value:"2017/10/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/18");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-hwe-16.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-lts-xenial");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev-hwe-16.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev-lts-xenial");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-legacy");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-legacy-hwe-16.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-xmir");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xvfb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xwayland");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xwayland-hwe-16.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xwayland-lts-xenial");
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:xdmx");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xdmx-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xmir");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xmir-hwe-16.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xnest");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xorg-server-source");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xorg-server-source-hwe-16.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xorg-server-source-lts-xenial");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr-hwe-16.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xserver-xephyr-lts-xenial");
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) 2017-2023 Canonical, Inc. / NASL script (C) 2017-2023 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': 'xdmx', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xdmx-tools', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xnest', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xorg-server-source', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xorg-server-source-lts-xenial', 'pkgver': '2:1.18.3-1ubuntu2.3~trusty4'},
{'osver': '14.04', 'pkgname': 'xserver-common', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xserver-xephyr', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xserver-xephyr-lts-xenial', 'pkgver': '2:1.18.3-1ubuntu2.3~trusty4'},
{'osver': '14.04', 'pkgname': 'xserver-xorg-core', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xserver-xorg-core-lts-xenial', 'pkgver': '2:1.18.3-1ubuntu2.3~trusty4'},
{'osver': '14.04', 'pkgname': 'xserver-xorg-core-udeb', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xserver-xorg-dev', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xserver-xorg-dev-lts-xenial', 'pkgver': '2:1.18.3-1ubuntu2.3~trusty4'},
{'osver': '14.04', 'pkgname': 'xserver-xorg-xmir', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xvfb', 'pkgver': '2:1.15.1-0ubuntu2.11'},
{'osver': '14.04', 'pkgname': 'xwayland-lts-xenial', 'pkgver': '2:1.18.3-1ubuntu2.3~trusty4'},
{'osver': '16.04', 'pkgname': 'xdmx', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xdmx-tools', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xmir', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xmir-hwe-16.04', 'pkgver': '2:1.19.3-1ubuntu1~16.04.4'},
{'osver': '16.04', 'pkgname': 'xnest', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xorg-server-source', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xorg-server-source-hwe-16.04', 'pkgver': '2:1.19.3-1ubuntu1~16.04.4'},
{'osver': '16.04', 'pkgname': 'xserver-common', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xserver-xephyr', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xserver-xephyr-hwe-16.04', 'pkgver': '2:1.19.3-1ubuntu1~16.04.4'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-core', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-core-hwe-16.04', 'pkgver': '2:1.19.3-1ubuntu1~16.04.4'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-core-udeb', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-dev', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-dev-hwe-16.04', 'pkgver': '2:1.19.3-1ubuntu1~16.04.4'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-legacy', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-legacy-hwe-16.04', 'pkgver': '2:1.19.3-1ubuntu1~16.04.4'},
{'osver': '16.04', 'pkgname': 'xserver-xorg-xmir', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xvfb', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xwayland', 'pkgver': '2:1.18.4-0ubuntu0.7'},
{'osver': '16.04', 'pkgname': 'xwayland-hwe-16.04', 'pkgver': '2:1.19.3-1ubuntu1~16.04.4'}
];
var flag = 0;
foreach 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)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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, 'xdmx / xdmx-tools / xmir / xmir-hwe-16.04 / xnest / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | xserver-xorg-core | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core |
canonical | ubuntu_linux | xserver-xorg-core-hwe-16.04 | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-hwe-16.04 |
canonical | ubuntu_linux | xserver-xorg-core-lts-xenial | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-lts-xenial |
canonical | ubuntu_linux | xserver-xorg-core-udeb | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-core-udeb |
canonical | ubuntu_linux | xserver-xorg-dev | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev |
canonical | ubuntu_linux | xserver-xorg-dev-hwe-16.04 | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev-hwe-16.04 |
canonical | ubuntu_linux | xserver-xorg-dev-lts-xenial | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-dev-lts-xenial |
canonical | ubuntu_linux | xserver-xorg-legacy | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-legacy |
canonical | ubuntu_linux | xserver-xorg-legacy-hwe-16.04 | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-legacy-hwe-16.04 |
canonical | ubuntu_linux | xserver-xorg-xmir | p-cpe:/a:canonical:ubuntu_linux:xserver-xorg-xmir |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12176
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12177
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12178
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12179
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12180
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12181
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12182
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12183
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12184
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12185
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12186
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12187
ubuntu.com/security/notices/USN-3456-1
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.011 Low
EPSS
Percentile
84.9%