7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
5.1%
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2585 advisory.
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283)
* kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (CVE-2024-26586)
* kernel: netfilter: divide error in nft_limit_init (CVE-2021-46915)
* kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier (CVE-2024-26602)
Bug Fix(es):
* kernel-rt: kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (JIRA:RHEL-20498)
* TRIAGE CVE-2021-46915 kernel-rt: kernel: netfilter: divide error in nft_limit_init (JIRA:RHEL-29264)
* kernel-rt: update RT source tree to the latest RHEL-8.4.z Batch 24 (JIRA:RHEL-29266)
* kernel-rt: kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier (JIRA:RHEL-26391)
* kernel-rt: kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (JIRA:RHEL-29217)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
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-2024:2585. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(194836);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");
script_cve_id(
"CVE-2021-46915",
"CVE-2023-40283",
"CVE-2024-26586",
"CVE-2024-26602"
);
script_xref(name:"RHSA", value:"2024:2585");
script_name(english:"RHEL 8 : kernel-rt (RHSA-2024:2585)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for kernel-rt.");
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-2024:2585 advisory.
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with
extremely high determinism requirements.
Security Fix(es):
* kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283)
* kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (CVE-2024-26586)
* kernel: netfilter: divide error in nft_limit_init (CVE-2021-46915)
* kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier (CVE-2024-26602)
Bug Fix(es):
* kernel-rt: kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (JIRA:RHEL-20498)
* TRIAGE CVE-2021-46915 kernel-rt: kernel: netfilter: divide error in nft_limit_init (JIRA:RHEL-29264)
* kernel-rt: update RT source tree to the latest RHEL-8.4.z Batch 24 (JIRA:RHEL-29266)
* kernel-rt: kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier (JIRA:RHEL-26391)
* kernel-rt: kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (JIRA:RHEL-29217)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
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/2024/rhsa-2024_2585.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9b868b92");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:2585");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#moderate");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2231800");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2265645");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2266423");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2267695");
script_set_attribute(attribute:"solution", value:
"Update the RHEL kernel-rt package based on the guidance in RHSA-2024:2585.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C");
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:U/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-2023-40283");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(369, 416);
script_set_attribute(attribute:"vendor_severity", value:"Moderate");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/01/12");
script_set_attribute(attribute:"patch_publication_date", value:"2024/04/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/30");
script_set_attribute(attribute:"plugin_type", value:"local");
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:kernel-rt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra");
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) 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-2021-46915', 'CVE-2023-40283', 'CVE-2024-26586', 'CVE-2024-26602');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2024:2585');
}
else
{
__rpm_report = ksplice_reporting_text();
}
}
var constraints = [
{
'repo_relative_urls': [
'content/tus/rhel8/8.4/x86_64/nfv/debug',
'content/tus/rhel8/8.4/x86_64/nfv/os',
'content/tus/rhel8/8.4/x86_64/nfv/source/SRPMS',
'content/tus/rhel8/8.4/x86_64/rt/debug',
'content/tus/rhel8/8.4/x86_64/rt/os',
'content/tus/rhel8/8.4/x86_64/rt/source/SRPMS'
],
'pkgs': [
{'reference':'kernel-rt-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-core-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-debug-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-debug-core-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-debug-devel-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-debug-kvm-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-debug-modules-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-debug-modules-extra-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-devel-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-kvm-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-modules-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-rt-modules-extra-4.18.0-305.130.1.rt7.206.el8_4', 'sp':'4', 'cpu':'x86_64', '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' +
'Telco Extended Update Support repository.\n' +
'Access to this repository 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_WARNING,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | kernel-rt | p-cpe:/a:redhat:enterprise_linux:kernel-rt |
redhat | enterprise_linux | kernel-rt-debug-core | p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core |
redhat | enterprise_linux | kernel-rt-debug-devel | p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel |
redhat | enterprise_linux | kernel-rt-devel | p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel |
redhat | rhel_tus | 8.4 | cpe:/o:redhat:rhel_tus:8.4 |
redhat | enterprise_linux | kernel-rt-core | p-cpe:/a:redhat:enterprise_linux:kernel-rt-core |
redhat | enterprise_linux | kernel-rt-kvm | p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm |
redhat | enterprise_linux | kernel-rt-modules | p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules |
redhat | enterprise_linux | kernel-rt-debug-modules-extra | p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra |
redhat | enterprise_linux | kernel-rt-modules-extra | p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46915
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40283
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26586
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26602
www.nessus.org/u?9b868b92
access.redhat.com/errata/RHSA-2024:2585
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=2231800
bugzilla.redhat.com/show_bug.cgi?id=2265645
bugzilla.redhat.com/show_bug.cgi?id=2266423
bugzilla.redhat.com/show_bug.cgi?id=2267695
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
5.1%