7.5 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L
6.6 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.2%
The remote CentOS Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the microcode_ctl-20230214-1.el9 build changelog.
Insufficient granularity of access control in out-of-band management in some Intel® Atom and Intel Xeon Scalable Processors may allow a privileged user to potentially enable escalation of privilege via adjacent network access. (CVE-2022-21216)
Incorrect default permissions in some memory controller configurations for some Intel® Xeon® Processors when using Intel® Software Guard Extensions which may allow a privileged user to potentially enable escalation of privilege via local access. (CVE-2022-33196)
Incorrect calculation in microcode keying mechanism for some 3rd Generation Intel® Xeon® Scalable Processors may allow a privileged user to potentially enable information disclosure via local access.
(CVE-2022-33972)
Improper isolation of shared resources in some Intel® Processors when using Intel® Software Guard Extensions may allow a privileged user to potentially enable information disclosure via local access.
(CVE-2022-38090)
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 package checks in this plugin were extracted from
# the CentOS Stream Build Service.
##
include('compat.inc');
if (description)
{
script_id(191341);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/26");
script_cve_id(
"CVE-2022-21216",
"CVE-2022-33196",
"CVE-2022-33972",
"CVE-2022-38090"
);
script_name(english:"CentOS 9 : microcode_ctl-20230214-1.el9");
script_set_attribute(attribute:"synopsis", value:
"The remote CentOS host is missing one or more security updates for microcode_ctl.");
script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the
microcode_ctl-20230214-1.el9 build changelog.
- Insufficient granularity of access control in out-of-band management in some Intel(R) Atom and Intel Xeon
Scalable Processors may allow a privileged user to potentially enable escalation of privilege via adjacent
network access. (CVE-2022-21216)
- Incorrect default permissions in some memory controller configurations for some Intel(R) Xeon(R)
Processors when using Intel(R) Software Guard Extensions which may allow a privileged user to potentially
enable escalation of privilege via local access. (CVE-2022-33196)
- Incorrect calculation in microcode keying mechanism for some 3rd Generation Intel(R) Xeon(R) Scalable
Processors may allow a privileged user to potentially enable information disclosure via local access.
(CVE-2022-33972)
- Improper isolation of shared resources in some Intel(R) Processors when using Intel(R) Software Guard
Extensions may allow a privileged user to potentially enable information disclosure via local access.
(CVE-2022-38090)
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://kojihub.stream.centos.org/koji/buildinfo?buildID=33050");
script_set_attribute(attribute:"solution", value:
"Update the CentOS 9 Stream microcode_ctl package.");
script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:M/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:A/AC:L/PR:H/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-2022-21216");
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:"2023/02/16");
script_set_attribute(attribute:"patch_publication_date", value:"2023/05/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/29");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:centos:centos:9");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:microcode_ctl");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CentOS Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/CentOS/release');
if (isnull(os_release) || 'CentOS' >!< os_release) audit(AUDIT_OS_NOT, 'CentOS');
var os_ver = pregmatch(pattern: "CentOS(?: Stream)?(?: Linux)? release ([0-9]+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '9')) audit(AUDIT_OS_NOT, 'CentOS 9.x', 'CentOS ' + os_ver);
if (!get_kb_item('Host/CentOS/rpm-list')) 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 && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS', cpu);
var pkgs = [
{'reference':'microcode_ctl-20230214-1.el9', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'4'}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'CentOS-' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (reference && _release) {
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'microcode_ctl');
}
7.5 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L
6.6 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.2%