CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
28.9%
The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3631 advisory.
A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service. (CVE-2023-5367)
A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed. (CVE-2023-5380)
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 Debian Security Advisory dla-3631. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(183912);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/03");
script_cve_id("CVE-2023-5367", "CVE-2023-5380");
script_name(english:"Debian DLA-3631-1 : xorg-server - LTS security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-3631 advisory.
- A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect
calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function
in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible
escalation of privileges or denial of service. (CVE-2023-5367)
- A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and
legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if
the pointer is warped from within a window on one screen to the root window of the other screen and if the
original window is destroyed followed by another window being destroyed. (CVE-2023-5380)
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://security-tracker.debian.org/tracker/source-package/xorg-server");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2023/dla-3631");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-5367");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-5380");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/xorg-server");
script_set_attribute(attribute:"solution", value:
"Upgrade the xorg-server packages.
For Debian 10 buster, these problems have been fixed in version 2");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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: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-2023-5367");
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:"2023/10/25");
script_set_attribute(attribute:"patch_publication_date", value:"2023/10/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/26");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xdmx");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xdmx-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xnest");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xorg-server-source");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xserver-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xserver-xephyr");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xserver-xorg-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xserver-xorg-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xserver-xorg-legacy");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xvfb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xwayland");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/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);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);
var pkgs = [
{'release': '10.0', 'prefix': 'xdmx', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xdmx-tools', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xnest', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xorg-server-source', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xserver-common', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xserver-xephyr', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xserver-xorg-core', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xserver-xorg-dev', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xserver-xorg-legacy', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xvfb', 'reference': '2:1.20.4-1+deb10u10'},
{'release': '10.0', 'prefix': 'xwayland', 'reference': '2:1.20.4-1+deb10u10'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var _release = NULL;
var prefix = NULL;
var reference = NULL;
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (_release && prefix && reference) {
if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : deb_report_get()
);
exit(0);
}
else
{
var tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'xdmx / xdmx-tools / xnest / xorg-server-source / xserver-common / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | xnest | p-cpe:/a:debian:debian_linux:xnest |
debian | debian_linux | xserver-xorg-core | p-cpe:/a:debian:debian_linux:xserver-xorg-core |
debian | debian_linux | 10.0 | cpe:/o:debian:debian_linux:10.0 |
debian | debian_linux | xdmx | p-cpe:/a:debian:debian_linux:xdmx |
debian | debian_linux | xwayland | p-cpe:/a:debian:debian_linux:xwayland |
debian | debian_linux | xdmx-tools | p-cpe:/a:debian:debian_linux:xdmx-tools |
debian | debian_linux | xserver-common | p-cpe:/a:debian:debian_linux:xserver-common |
debian | debian_linux | xvfb | p-cpe:/a:debian:debian_linux:xvfb |
debian | debian_linux | xserver-xephyr | p-cpe:/a:debian:debian_linux:xserver-xephyr |
debian | debian_linux | xserver-xorg-dev | p-cpe:/a:debian:debian_linux:xserver-xorg-dev |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5367
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5380
packages.debian.org/source/buster/xorg-server
security-tracker.debian.org/tracker/CVE-2023-5367
security-tracker.debian.org/tracker/CVE-2023-5380
security-tracker.debian.org/tracker/source-package/xorg-server
www.debian.org/lts/security/2023/dla-3631
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
28.9%