7.8 High
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
0.0004 Low
EPSS
Percentile
5.1%
The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6407-1 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-6407-1. 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(182471);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/13");
script_cve_id("CVE-2023-43785", "CVE-2023-43786", "CVE-2023-43787");
script_xref(name:"USN", value:"6407-1");
script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 23.04 : libx11 vulnerabilities (USN-6407-1)");
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 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-6407-1 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-6407-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
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-2023-43787");
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:"2023/10/03");
script_set_attribute(attribute:"patch_publication_date", value:"2023/10/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/03");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libx11-6");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libx11-data");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libx11-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libx11-xcb-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libx11-xcb1");
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) 2023 Canonical, Inc. / NASL script (C) 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 (! ('20.04' >< os_release || '22.04' >< os_release || '23.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 23.04', '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': '20.04', 'pkgname': 'libx11-6', 'pkgver': '2:1.6.9-2ubuntu1.6'},
{'osver': '20.04', 'pkgname': 'libx11-data', 'pkgver': '2:1.6.9-2ubuntu1.6'},
{'osver': '20.04', 'pkgname': 'libx11-dev', 'pkgver': '2:1.6.9-2ubuntu1.6'},
{'osver': '20.04', 'pkgname': 'libx11-xcb-dev', 'pkgver': '2:1.6.9-2ubuntu1.6'},
{'osver': '20.04', 'pkgname': 'libx11-xcb1', 'pkgver': '2:1.6.9-2ubuntu1.6'},
{'osver': '22.04', 'pkgname': 'libx11-6', 'pkgver': '2:1.7.5-1ubuntu0.3'},
{'osver': '22.04', 'pkgname': 'libx11-data', 'pkgver': '2:1.7.5-1ubuntu0.3'},
{'osver': '22.04', 'pkgname': 'libx11-dev', 'pkgver': '2:1.7.5-1ubuntu0.3'},
{'osver': '22.04', 'pkgname': 'libx11-xcb-dev', 'pkgver': '2:1.7.5-1ubuntu0.3'},
{'osver': '22.04', 'pkgname': 'libx11-xcb1', 'pkgver': '2:1.7.5-1ubuntu0.3'},
{'osver': '23.04', 'pkgname': 'libx11-6', 'pkgver': '2:1.8.4-2ubuntu0.3'},
{'osver': '23.04', 'pkgname': 'libx11-data', 'pkgver': '2:1.8.4-2ubuntu0.3'},
{'osver': '23.04', 'pkgname': 'libx11-dev', 'pkgver': '2:1.8.4-2ubuntu0.3'},
{'osver': '23.04', 'pkgname': 'libx11-xcb-dev', 'pkgver': '2:1.8.4-2ubuntu0.3'},
{'osver': '23.04', 'pkgname': 'libx11-xcb1', 'pkgver': '2:1.8.4-2ubuntu0.3'}
];
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_WARNING,
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, 'libx11-6 / libx11-data / libx11-dev / libx11-xcb-dev / libx11-xcb1');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 20.04 | cpe:/o:canonical:ubuntu_linux:20.04:-:lts |
canonical | ubuntu_linux | 22.04 | cpe:/o:canonical:ubuntu_linux:22.04:-:lts |
canonical | ubuntu_linux | 23.04 | cpe:/o:canonical:ubuntu_linux:23.04 |
canonical | ubuntu_linux | libx11-6 | p-cpe:/a:canonical:ubuntu_linux:libx11-6 |
canonical | ubuntu_linux | libx11-data | p-cpe:/a:canonical:ubuntu_linux:libx11-data |
canonical | ubuntu_linux | libx11-dev | p-cpe:/a:canonical:ubuntu_linux:libx11-dev |
canonical | ubuntu_linux | libx11-xcb-dev | p-cpe:/a:canonical:ubuntu_linux:libx11-xcb-dev |
canonical | ubuntu_linux | libx11-xcb1 | p-cpe:/a:canonical:ubuntu_linux:libx11-xcb1 |