CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
EPSS
Percentile
35.3%
The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:3496-1 advisory.
Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2022-40982)
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled?address, potentially leading to information disclosure. (CVE-2023-20569)
An issue in Zen 2 CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information. (CVE-2023-20593)
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
# SUSE update advisory SUSE-SU-2023:3496-1. The text itself
# is copyright (C) SUSE.
##
include('compat.inc');
if (description)
{
script_id(180333);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/25");
script_cve_id("CVE-2022-40982", "CVE-2023-20569", "CVE-2023-20593");
script_xref(name:"SuSE", value:"SUSE-SU-2023:3496-1");
script_name(english:"SUSE SLES15 Security Update : xen (SUSE-SU-2023:3496-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as
referenced in the SUSE-SU-2023:3496-1 advisory.
- Information exposure through microarchitectural state after transient execution in certain vector
execution units for some Intel(R) Processors may allow an authenticated user to potentially enable
information disclosure via local access. (CVE-2022-40982)
- A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address
prediction. This may result in speculative execution at an attacker-controlled?address, potentially
leading to information disclosure. (CVE-2023-20569)
- An issue in Zen 2 CPUs, under specific microarchitectural circumstances, may allow an attacker to
potentially access sensitive information. (CVE-2023-20593)
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://bugzilla.suse.com/1027519");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1213616");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1214082");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1214083");
# https://lists.suse.com/pipermail/sle-security-updates/2023-August/016049.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4db1b952");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-40982");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-20569");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-20593");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/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:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-20593");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-40982");
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:"2023/07/24");
script_set_attribute(attribute:"patch_publication_date", value:"2023/08/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/31");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-xendomains-wait-disk");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE 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/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");
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/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15|SLES_SAP15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES15 / SLES_SAP15', 'SUSE (' + os_ver + ')');
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE (' + os_ver + ')', cpu);
var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(2)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP2", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(2)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP2", os_ver + " SP" + service_pack);
var pkgs = [
{'reference':'xen-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.2']},
{'reference':'xen-devel-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.2']},
{'reference':'xen-libs-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.2']},
{'reference':'xen-tools-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.2']},
{'reference':'xen-tools-domU-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.2']},
{'reference':'xen-tools-xendomains-wait-disk-4.13.5_02-150200.3.74.1', 'sp':'2', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.2']},
{'reference':'xen-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.2', 'sles-ltss-release-15.2']},
{'reference':'xen-devel-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.2', 'sles-ltss-release-15.2']},
{'reference':'xen-libs-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.2', 'sles-ltss-release-15.2']},
{'reference':'xen-tools-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.2', 'sles-ltss-release-15.2']},
{'reference':'xen-tools-domU-4.13.5_02-150200.3.74.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.2', 'sles-ltss-release-15.2']},
{'reference':'xen-tools-xendomains-wait-disk-4.13.5_02-150200.3.74.1', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.2', 'sles-ltss-release-15.2']}
];
var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var exists_check = NULL;
var rpm_spec_vers_cmp = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 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['exists_check'])) exists_check = package_array['exists_check'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (reference && _release) {
if (exists_check) {
var check_flag = 0;
foreach var check (exists_check) {
if (!rpm_exists(release:_release, rpm:check)) continue;
if ('ltss' >< tolower(check)) ltss_caveat_required = TRUE;
check_flag++;
}
if (!check_flag) continue;
}
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
}
}
if (flag)
{
var ltss_plugin_caveat = NULL;
if(ltss_caveat_required) ltss_plugin_caveat = '\n' +
'NOTE: This vulnerability check contains fixes that apply to\n' +
'packages only available in SUSE Enterprise Linux Server LTSS\n' +
'repositories. Access to these package security updates require\n' +
'a paid SUSE LTSS subscription.\n';
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get() + ltss_plugin_caveat
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'xen / xen-devel / xen-libs / xen-tools / xen-tools-domU / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40982
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20569
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20593
www.nessus.org/u?4db1b952
bugzilla.suse.com/1027519
bugzilla.suse.com/1213616
bugzilla.suse.com/1214082
bugzilla.suse.com/1214083
www.suse.com/security/cve/CVE-2022-40982
www.suse.com/security/cve/CVE-2023-20569
www.suse.com/security/cve/CVE-2023-20593