5.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:N/A:P
6.8 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
28.8%
The remote Ubuntu 16.04 ESM host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5535-1 advisory.
Insufficient control flow management in some Intel® Processors may allow an authenticated user to potentially enable a denial of service via local access. (CVE-2021-0127)
Improper initialization of shared resources in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2021-0145)
Hardware allows activation of test or debug logic at runtime for some Intel® processors which may allow an unauthenticated user to potentially enable escalation of privilege via physical access. (CVE-2021-0146)
Improper access control for some 3rd Generation Intel® Xeon® Scalable Processors before BIOS version MR7, may allow a local attacker to potentially enable information disclosure via local access.
(CVE-2021-33117)
Out of bounds read under complex microarchitectural condition in memory subsystem for some Intel Atom® Processors may allow authenticated user to potentially enable information disclosure or cause denial of service via network access. (CVE-2021-33120)
Incomplete cleanup of multi-core shared buffers for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2022-21123)
Incomplete cleanup of microarchitectural fill buffers on some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2022-21125)
Incomplete cleanup in specific special register read operations for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2022-21127)
Processor optimization removal or modification of security-critical code for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access.
(CVE-2022-21151)
Incomplete cleanup in specific special register write operations for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2022-21166)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5535-1. 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(163520);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/10");
script_cve_id(
"CVE-2021-0127",
"CVE-2021-0145",
"CVE-2021-0146",
"CVE-2021-33117",
"CVE-2021-33120",
"CVE-2022-21123",
"CVE-2022-21125",
"CVE-2022-21127",
"CVE-2022-21151",
"CVE-2022-21166"
);
script_xref(name:"USN", value:"5535-1");
script_name(english:"Ubuntu 16.04 ESM : Intel Microcode vulnerabilities (USN-5535-1)");
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 host has a package installed that is affected by multiple vulnerabilities as referenced in
the USN-5535-1 advisory.
- Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to
potentially enable a denial of service via local access. (CVE-2021-0127)
- Improper initialization of shared resources in some Intel(R) Processors may allow an authenticated user to
potentially enable information disclosure via local access. (CVE-2021-0145)
- Hardware allows activation of test or debug logic at runtime for some Intel(R) processors which may allow
an unauthenticated user to potentially enable escalation of privilege via physical access. (CVE-2021-0146)
- Improper access control for some 3rd Generation Intel(R) Xeon(R) Scalable Processors before BIOS version
MR7, may allow a local attacker to potentially enable information disclosure via local access.
(CVE-2021-33117)
- Out of bounds read under complex microarchitectural condition in memory subsystem for some Intel Atom(R)
Processors may allow authenticated user to potentially enable information disclosure or cause denial of
service via network access. (CVE-2021-33120)
- Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated
user to potentially enable information disclosure via local access. (CVE-2022-21123)
- Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an
authenticated user to potentially enable information disclosure via local access. (CVE-2022-21125)
- Incomplete cleanup in specific special register read operations for some Intel(R) Processors may allow an
authenticated user to potentially enable information disclosure via local access. (CVE-2022-21127)
- Processor optimization removal or modification of security-critical code for some Intel(R) Processors may
allow an authenticated user to potentially enable information disclosure via local access.
(CVE-2022-21151)
- Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an
authenticated user to potentially enable information disclosure via local access. (CVE-2022-21166)
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-5535-1");
script_set_attribute(attribute:"solution", value:
"Update the affected intel-microcode package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-33120");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-0146");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/11/17");
script_set_attribute(attribute:"patch_publication_date", value:"2022/07/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/07/28");
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:"p-cpe:/a:canonical:ubuntu_linux:intel-microcode");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 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 (! ('16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04', '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': '16.04', 'pkgname': 'intel-microcode', 'pkgver': '3.20220510.0ubuntu0.16.04.1+esm1'}
];
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, 'intel-microcode');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 16.04 | cpe:/o:canonical:ubuntu_linux:16.04:-:esm |
canonical | ubuntu_linux | intel-microcode | p-cpe:/a:canonical:ubuntu_linux:intel-microcode |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0127
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0145
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0146
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33117
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33120
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21123
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21125
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21127
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21151
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21166
ubuntu.com/security/notices/USN-5535-1
5.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:N/A:P
6.8 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
28.8%