CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
90.9%
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7557 advisory.
kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)
hw: amd: Cross-Process Information Leak (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 descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2023:7557. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(186392);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/19");
script_cve_id("CVE-2023-5178", "CVE-2023-20593");
script_xref(name:"RHSA", value:"2023:7557");
script_name(english:"RHEL 8 : kernel (RHSA-2023:7557)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for kernel.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2023:7557 advisory.
- kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)
- hw: amd: Cross-Process Information Leak (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.");
# https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7557.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5c9a9d3a");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2217845");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2241924");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2023:7557");
script_set_attribute(attribute:"solution", value:
"Update the RHEL kernel package based on the guidance in RHSA-2023:7557.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-5178");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(416, 1239);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/07/24");
script_set_attribute(attribute:"patch_publication_date", value:"2023/11/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/28");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_aus:8.4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_e4s:8.4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_tus:8.4");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:bpftool");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-cross-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules-extra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-modules");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-modules-extra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules-extra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python3-perf");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl", "linux_alt_patch_detect.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.inc');
include('ksplice.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'eq', os_version: os_ver, rhel_version: '8.4')) audit(AUDIT_OS_NOT, 'Red Hat 8.4', 'Red Hat ' + os_ver);
if (!get_kb_item('Host/RedHat/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, 'Red Hat', cpu);
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
rm_kb_item(name:'Host/uptrack-uname-r');
var cve_list = make_list('CVE-2023-5178', 'CVE-2023-20593');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2023:7557');
}
else
{
__rpm_report = ksplice_reporting_text();
}
}
var constraints = [
{
'repo_relative_urls': [
'content/aus/rhel8/8.4/x86_64/baseos/debug',
'content/aus/rhel8/8.4/x86_64/baseos/os',
'content/aus/rhel8/8.4/x86_64/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/aarch64/baseos/debug',
'content/e4s/rhel8/8.4/aarch64/baseos/os',
'content/e4s/rhel8/8.4/aarch64/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/ppc64le/baseos/debug',
'content/e4s/rhel8/8.4/ppc64le/baseos/os',
'content/e4s/rhel8/8.4/ppc64le/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/s390x/baseos/debug',
'content/e4s/rhel8/8.4/s390x/baseos/os',
'content/e4s/rhel8/8.4/s390x/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/x86_64/baseos/debug',
'content/e4s/rhel8/8.4/x86_64/baseos/os',
'content/e4s/rhel8/8.4/x86_64/baseos/source/SRPMS',
'content/tus/rhel8/8.4/x86_64/baseos/debug',
'content/tus/rhel8/8.4/x86_64/baseos/os',
'content/tus/rhel8/8.4/x86_64/baseos/source/SRPMS'
],
'pkgs': [
{'reference':'bpftool-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'bpftool-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-core-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-core-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-cross-headers-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-cross-headers-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-core-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-core-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-devel-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-devel-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-modules-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-modules-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-modules-extra-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-modules-extra-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-devel-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-devel-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-modules-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-modules-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-modules-extra-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-modules-extra-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perf-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perf-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python3-perf-4.18.0-305.114.1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python3-perf-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
},
{
'repo_relative_urls': [
'content/e4s/rhel8/8.4/aarch64/baseos/debug',
'content/e4s/rhel8/8.4/aarch64/baseos/os',
'content/e4s/rhel8/8.4/aarch64/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/ppc64le/baseos/debug',
'content/e4s/rhel8/8.4/ppc64le/baseos/os',
'content/e4s/rhel8/8.4/ppc64le/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/s390x/baseos/debug',
'content/e4s/rhel8/8.4/s390x/baseos/os',
'content/e4s/rhel8/8.4/s390x/baseos/source/SRPMS',
'content/e4s/rhel8/8.4/x86_64/baseos/debug',
'content/e4s/rhel8/8.4/x86_64/baseos/os',
'content/e4s/rhel8/8.4/x86_64/baseos/source/SRPMS'
],
'pkgs': [
{'reference':'kernel-zfcpdump-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-zfcpdump-core-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-zfcpdump-devel-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-zfcpdump-modules-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-zfcpdump-modules-extra-4.18.0-305.114.1.el8_4', 'sp':'4', 'cpu':'s390x', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
}
];
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var flag = 0;
foreach var constraint_array ( constraints ) {
var repo_relative_urls = NULL;
if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
foreach var pkg ( constraint_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;
var cves = NULL;
if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
if (reference &&
_release &&
rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
(applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
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, cves:cves)) flag++;
}
}
if (flag)
{
var subscription_caveat = '\n' +
'NOTE: This vulnerability check contains fixes that apply to\n' +
'packages only available in the Red Hat Enterprise Linux\n' +
'Advanced Update Support, Telco Extended Update Support or Update Services for SAP Solutions repositories.\n' +
'Access to these repositories requires a paid RHEL subscription.\n';
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
else extra = subscription_caveat + rpm_report_get();
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bpftool / kernel / kernel-core / kernel-cross-headers / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20593
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5178
www.nessus.org/u?5c9a9d3a
access.redhat.com/errata/RHSA-2023:7557
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=2217845
bugzilla.redhat.com/show_bug.cgi?id=2241924
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
90.9%