The remote Debian 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-2718 advisory.
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)
Observable timing discrepancy in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-24512)
Domain-bypass transient execution vulnerability in some Intel Atom® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-24513)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-2718. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(152078);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/07/26");
script_cve_id(
"CVE-2020-24489",
"CVE-2020-24511",
"CVE-2020-24512",
"CVE-2020-24513"
);
script_name(english:"Debian DLA-2718-1 : intel-microcode - LTS security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"The remote Debian 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the
dla-2718 advisory.
- 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)
- Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially
enable information disclosure via local access. (CVE-2020-24512)
- Domain-bypass transient execution vulnerability in some Intel Atom(R) Processors may allow an
authenticated user to potentially enable information disclosure via local access. (CVE-2020-24513)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
# https://security-tracker.debian.org/tracker/source-package/intel-microcode
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?019586d4");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2021/dla-2718");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-24489");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-24511");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-24512");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-24513");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/intel-microcode");
script_set_attribute(attribute:"solution", value:
"Upgrade the intel-microcode packages.
For Debian 9 stretch, these problems have been fixed in version 3.20210608.2~deb9u2.");
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:"2021/06/09");
script_set_attribute(attribute:"patch_publication_date", value:"2021/07/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/26");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:intel-microcode");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include('audit.inc');
include('debian_package.inc');
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
release = chomp(release);
if (! preg(pattern:"^(9)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 9.0', 'Debian ' + release);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);
pkgs = [
{'release': '9.0', 'prefix': 'intel-microcode', 'reference': '3.20210608.2~deb9u2'}
];
flag = 0;
foreach package_array ( pkgs ) {
release = NULL;
prefix = NULL;
reference = NULL;
if (!empty_or_null(package_array['release'])) release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (release && prefix && reference) {
if (deb_check(release:release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : deb_report_get()
);
exit(0);
}
else
{
tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'intel-microcode');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | intel-microcode | p-cpe:/a:debian:debian_linux:intel-microcode |
debian | debian_linux | 9.0 | cpe:/o:debian:debian_linux:9.0 |
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-2020-24513
www.nessus.org/u?019586d4
packages.debian.org/source/stretch/intel-microcode
security-tracker.debian.org/tracker/CVE-2020-24489
security-tracker.debian.org/tracker/CVE-2020-24511
security-tracker.debian.org/tracker/CVE-2020-24512
security-tracker.debian.org/tracker/CVE-2020-24513
www.debian.org/lts/security/2021/dla-2718