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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
73.8%
The remote Ubuntu 16.04 ESM / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6587-2 advisory.
USN-6587-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the DeviceFocusEvent and ProcXIQueryPointer APIs. An
attacker could possibly use this issue to cause the X Server to crash,
obtain sensitive information, or execute arbitrary code. (CVE-2023-6816)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
reattaching to a different master device. An attacker could use this issue
to cause the X Server to crash, leading to a denial of service, or possibly
execute arbitrary code. (CVE-2024-0229)
Olivier Fourdan and Donn Seeley discovered that the X.Org X Server
incorrectly labeled GLX PBuffers when used with SELinux. An attacker could
use this issue to cause the X Server to crash, leading to a denial of
service. (CVE-2024-0408)
Olivier Fourdan discovered that the X.Org X Server incorrectly handled
the curser code when used with SELinux. An attacker could use this issue to
cause the X Server to crash, leading to a denial of service.
(CVE-2024-0409)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the XISendDeviceHierarchyEvent API. An attacker
could possibly use this issue to cause the X Server to crash, or execute
arbitrary code. (CVE-2024-21885)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
devices being disabled. An attacker could possibly use this issue to cause
the X Server to crash, or execute arbitrary code. (CVE-2024-21886)
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.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6587-2. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(189293);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");
script_cve_id(
"CVE-2023-6816",
"CVE-2024-0229",
"CVE-2024-0408",
"CVE-2024-0409",
"CVE-2024-21885",
"CVE-2024-21886"
);
script_xref(name:"USN", value:"6587-2");
script_name(english:"Ubuntu 16.04 ESM / 18.04 ESM : X.Org X Server vulnerabilities (USN-6587-2)");
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 16.04 ESM / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-6587-2 advisory.
USN-6587-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for
Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the DeviceFocusEvent and ProcXIQueryPointer APIs. An
attacker could possibly use this issue to cause the X Server to crash,
obtain sensitive information, or execute arbitrary code. (CVE-2023-6816)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
reattaching to a different master device. An attacker could use this issue
to cause the X Server to crash, leading to a denial of service, or possibly
execute arbitrary code. (CVE-2024-0229)
Olivier Fourdan and Donn Seeley discovered that the X.Org X Server
incorrectly labeled GLX PBuffers when used with SELinux. An attacker could
use this issue to cause the X Server to crash, leading to a denial of
service. (CVE-2024-0408)
Olivier Fourdan discovered that the X.Org X Server incorrectly handled
the curser code when used with SELinux. An attacker could use this issue to
cause the X Server to crash, leading to a denial of service.
(CVE-2024-0409)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the XISendDeviceHierarchyEvent API. An attacker
could possibly use this issue to cause the X Server to crash, or execute
arbitrary code. (CVE-2024-21885)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
devices being disabled. An attacker could possibly use this issue to cause
the X Server to crash, or execute arbitrary code. (CVE-2024-21886)
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-6587-2");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-6816");
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:"2024/01/16");
script_set_attribute(attribute:"patch_publication_date", value:"2024/01/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:esm");
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: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: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-xorg-core");
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-legacy");
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:"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) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.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 (! ('16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04', '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 ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);
var pro_caveat_needed = FALSE;
var pkgs = [
{'osver': '16.04', 'pkgname': 'xdmx', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xdmx-tools', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xmir', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xnest', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xorg-server-source', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xserver-common', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xserver-xephyr', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xserver-xorg-core', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xserver-xorg-dev', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xserver-xorg-legacy', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xserver-xorg-xmir', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xvfb', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '16.04', 'pkgname': 'xwayland', 'pkgver': '2:1.18.4-0ubuntu0.12+esm9', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xdmx', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xdmx-tools', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xmir', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xnest', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xorg-server-source', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xserver-common', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xserver-xephyr', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xserver-xorg-core', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xserver-xorg-dev', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xserver-xorg-legacy', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xserver-xorg-xmir', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xvfb', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xwayland', 'pkgver': '2:1.19.6-1ubuntu4.15+esm4', 'ubuntu_pro': TRUE}
];
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'];
var pro_required = NULL;
if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) {
flag++;
if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
}
}
}
if (flag)
{
var extra = '';
if (pro_caveat_needed) {
extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
extra += 'require an Ubuntu Pro subscription.\n\n';
}
extra += ubuntu_report_get();
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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, 'xdmx / xdmx-tools / xmir / xnest / xorg-server-source / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6816
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0229
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0408
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0409
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21885
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21886
ubuntu.com/security/notices/USN-6587-2
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
73.8%