CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
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
58.0%
The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6474-1 advisory.
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. (CVE-2022-23479, CVE-2022-23481, CVE-2022-23483, CVE-2023-42822)
It was discovered that xrdp improperly handled session establishment errors. An attacker could potentially use this issue to bypass the OS-level session restrictions by PAM. (CVE-2023-40184)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds writes. An attacker could possibly use this issue to cause memory corruption or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2022-23468)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2022-23480, CVE-2022-23482, CVE-2022-23484)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23477, CVE-2022-23493)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds writes. An attacker could possibly use this issue to cause memory corruption or execute arbitrary code. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23478)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive information. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-23613)
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-6474-1. 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(185416);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");
script_cve_id(
"CVE-2022-23468",
"CVE-2022-23477",
"CVE-2022-23478",
"CVE-2022-23479",
"CVE-2022-23480",
"CVE-2022-23481",
"CVE-2022-23482",
"CVE-2022-23483",
"CVE-2022-23484",
"CVE-2022-23493",
"CVE-2022-23613",
"CVE-2023-40184",
"CVE-2023-42822"
);
script_xref(name:"USN", value:"6474-1");
script_name(english:"Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM : xrdp vulnerabilities (USN-6474-1)");
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 16.04 ESM / 18.04 ESM / 20.04 ESM / 22.04 ESM host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-6474-1 advisory.
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to
out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive
information. (CVE-2022-23479, CVE-2022-23481, CVE-2022-23483, CVE-2023-42822)
It was discovered that xrdp improperly handled session establishment errors. An attacker could potentially
use this issue to bypass the OS-level session restrictions by PAM. (CVE-2023-40184)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to
out-of-bounds writes. An attacker could possibly use this issue to cause memory corruption or execute
arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2022-23468)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to
out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2022-23480, CVE-2022-23482, CVE-2022-23484)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to
out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23477,
CVE-2022-23493)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to
out-of-bounds writes. An attacker could possibly use this issue to cause memory corruption or execute
arbitrary code. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23478)
It was discovered that xrdp incorrectly handled validation of client-supplied data, which could lead to
out-of-bounds reads. An attacker could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-23613)
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-6474-1");
script_set_attribute(attribute:"solution", value:
"Update the affected xorgxrdp, xrdp and / or xrdp-pulseaudio-installer packages.");
script_set_cvss_base_vector("CVSS2#AV:L/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-2022-23613");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-23484");
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:"2022/02/07");
script_set_attribute(attribute:"patch_publication_date", value:"2023/11/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/09");
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:"cpe:/o:canonical:ubuntu_linux:20.04:-:esm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:esm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xorgxrdp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xrdp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:xrdp-pulseaudio-installer");
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) 2023-2024 Canonical, Inc. / NASL script (C) 2023-2024 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 || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04 / 22.04', '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': 'xrdp', 'pkgver': '0.6.1-2ubuntu0.3+esm3', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xorgxrdp', 'pkgver': '0.9.5-2ubuntu0.1~esm2', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xrdp', 'pkgver': '0.9.5-2ubuntu0.1~esm2', 'ubuntu_pro': TRUE},
{'osver': '18.04', 'pkgname': 'xrdp-pulseaudio-installer', 'pkgver': '0.9.5-2ubuntu0.1~esm2', 'ubuntu_pro': TRUE},
{'osver': '20.04', 'pkgname': 'xrdp', 'pkgver': '0.9.12-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE},
{'osver': '22.04', 'pkgname': 'xrdp', 'pkgver': '0.9.17-2ubuntu2+esm1', '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, 'xorgxrdp / xrdp / xrdp-pulseaudio-installer');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23468
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23477
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23478
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23479
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23480
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23481
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23482
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23483
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23484
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23493
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23613
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40184
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42822
ubuntu.com/security/notices/USN-6474-1
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
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
58.0%