CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
19.4%
The remote Rocky Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RLSA-2021:3027 advisory.
Incomplete cleanup from specific special register read operations in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-0543)
Cleanup errors in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-0548)
Cleanup errors in some data cache evictions for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-0549)
Incomplete cleanup in some Intel® VT-d products may allow an authenticated user to potentially enable escalation of privilege via local access. (CVE-2020-24489)
Improper isolation of shared resources in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-24511, CVE-2020-8698)
Observable timing discrepancy in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-24512)
Observable discrepancy in the RAPL interface for some Intel® Processors may allow a privileged user to potentially enable information disclosure via local access. (CVE-2020-8695)
Improper removal of sensitive information before storage or transfer in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-8696)
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
# Rocky Linux Security Advisory RLSA-2021:3027.
##
include('compat.inc');
if (description)
{
script_id(184626);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/06");
script_cve_id(
"CVE-2020-0543",
"CVE-2020-0548",
"CVE-2020-0549",
"CVE-2020-8695",
"CVE-2020-8696",
"CVE-2020-8698",
"CVE-2020-24489",
"CVE-2020-24511",
"CVE-2020-24512"
);
script_xref(name:"RLSA", value:"2021:3027");
script_name(english:"Rocky Linux 8 : microcode_ctl (RLSA-2021:3027)");
script_set_attribute(attribute:"synopsis", value:
"The remote Rocky Linux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Rocky Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the
RLSA-2021:3027 advisory.
- Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an
authenticated user to potentially enable information disclosure via local access. (CVE-2020-0543)
- Cleanup errors in some Intel(R) Processors may allow an authenticated user to potentially enable
information disclosure via local access. (CVE-2020-0548)
- Cleanup errors in some data cache evictions for some Intel(R) Processors may allow an authenticated user
to potentially enable information disclosure via local access. (CVE-2020-0549)
- Incomplete cleanup in some Intel(R) VT-d products may allow an authenticated user to potentially enable
escalation of privilege via local access. (CVE-2020-24489)
- Improper isolation of shared resources in some Intel(R) Processors may allow an authenticated user to
potentially enable information disclosure via local access. (CVE-2020-24511, CVE-2020-8698)
- Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially
enable information disclosure via local access. (CVE-2020-24512)
- Observable discrepancy in the RAPL interface for some Intel(R) Processors may allow a privileged user to
potentially enable information disclosure via local access. (CVE-2020-8695)
- Improper removal of sensitive information before storage or transfer in some Intel(R) Processors may allow
an authenticated user to potentially enable information disclosure via local access. (CVE-2020-8696)
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://errata.rockylinux.org/RLSA-2021:3027");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1788786");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1788788");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1827165");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1828583");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1890355");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1890356");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1962650");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1962702");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1962722");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1972325");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1972328");
script_set_attribute(attribute:"solution", value:
"Update the affected microcode_ctl package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
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:C/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-2020-24489");
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:"2020/01/28");
script_set_attribute(attribute:"patch_publication_date", value:"2021/08/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/06");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:microcode_ctl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:rocky:linux:8");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Rocky Linux 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/RockyLinux/release", "Host/RockyLinux/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RockyLinux/release');
if (isnull(os_release) || 'Rocky Linux' >!< os_release) audit(AUDIT_OS_NOT, 'Rocky Linux');
var os_ver = pregmatch(pattern: "Rocky(?: Linux)? release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Rocky Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Rocky Linux 8.x', 'Rocky Linux ' + os_ver);
if (!get_kb_item('Host/RockyLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Rocky Linux', cpu);
var pkgs = [
{'reference':'microcode_ctl-20210216-1.20210608.1.el8_4', 'cpu':'x86_64', 'release':'8', '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;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'Rocky-' + 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 (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
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_WARNING,
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');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0543
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0548
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0549
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24489
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24511
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24512
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8695
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8696
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8698
bugzilla.redhat.com/show_bug.cgi?id=1788786
bugzilla.redhat.com/show_bug.cgi?id=1788788
bugzilla.redhat.com/show_bug.cgi?id=1827165
bugzilla.redhat.com/show_bug.cgi?id=1828583
bugzilla.redhat.com/show_bug.cgi?id=1890355
bugzilla.redhat.com/show_bug.cgi?id=1890356
bugzilla.redhat.com/show_bug.cgi?id=1962650
bugzilla.redhat.com/show_bug.cgi?id=1962702
bugzilla.redhat.com/show_bug.cgi?id=1962722
bugzilla.redhat.com/show_bug.cgi?id=1972325
bugzilla.redhat.com/show_bug.cgi?id=1972328
errata.rockylinux.org/RLSA-2021:3027
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
19.4%