10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
9 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
10.1%
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:0376 advisory.
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: use after free in unix_stream_sendpage (CVE-2023-4622)
* kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)
* kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (CVE-2023-2163)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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-2024:0376. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(189527);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/04");
script_cve_id("CVE-2023-2163", "CVE-2023-4622", "CVE-2023-42753");
script_xref(name:"RHSA", value:"2024:0376");
script_name(english:"RHEL 8 : kpatch-patch (RHSA-2024:0376)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for kpatch-patch.");
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-2024:0376 advisory.
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify
the code of a running kernel.
Security Fix(es):
* kernel: use after free in unix_stream_sendpage (CVE-2023-4622)
* kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)
* kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe
(CVE-2023-2163)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
other related information, refer to the CVE page(s) listed in the References section.
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_0376.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?65b3c1e9");
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=2237760");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2239843");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2240249");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2024:0376");
script_set_attribute(attribute:"solution", value:
"Update the RHEL kpatch-patch package based on the guidance in RHSA-2024:0376.");
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: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: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-2023-42753");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-2163");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(416, 682, 787);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/05/11");
script_set_attribute(attribute:"patch_publication_date", value:"2024/01/23");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/25");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_e4s:8.2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_109_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_113_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_116_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_119_1");
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("linux_alt_patch_detect.nasl", "ssh_get_info.nasl", "redhat_repos.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: '8.2')) audit(AUDIT_OS_NOT, 'Red Hat 8.2', '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);
var uname_r = get_kb_item("Host/uname-r");
if (empty_or_null(uname_r)) audit(AUDIT_UNKNOWN_APP_VER, "kernel");
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
rm_kb_item(name:'Host/uptrack-uname-r');
var cve_list = make_list('CVE-2023-2163', 'CVE-2023-4622', 'CVE-2023-42753');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2024:0376');
}
else
{
__rpm_report = ksplice_reporting_text();
}
}
var kernel_live_checks = [
{
'repo_relative_urls': [
'content/e4s/rhel8/8.2/ppc64le/baseos/debug',
'content/e4s/rhel8/8.2/ppc64le/baseos/os',
'content/e4s/rhel8/8.2/ppc64le/baseos/source/SRPMS',
'content/e4s/rhel8/8.2/x86_64/baseos/debug',
'content/e4s/rhel8/8.2/x86_64/baseos/os',
'content/e4s/rhel8/8.2/x86_64/baseos/source/SRPMS'
],
'kernels': {
'4.18.0-193.109.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_109_1-1-4.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.109.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_109_1-1-4.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.113.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_113_1-1-3.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.113.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_113_1-1-3.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.116.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_116_1-1-2.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.116.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_116_1-1-2.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.119.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_119_1-1-1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.119.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_119_1-1-1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
}
}
}
];
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:kernel_live_checks);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var flag = 0;
var kernel_affected = FALSE;
foreach var kernel_array ( kernel_live_checks ) {
var repo_relative_urls = NULL;
if (!empty_or_null(kernel_array['repo_relative_urls'])) repo_relative_urls = kernel_array['repo_relative_urls'];
var kpatch_details = kernel_array['kernels'][uname_r];
if (empty_or_null(kpatch_details)) continue;
kernel_affected = TRUE;
foreach var pkg ( kpatch_details['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++;
}
}
# No kpatch details found for the running kernel version
if (!kernel_affected) audit(AUDIT_INST_VER_NOT_VULN, 'kernel', uname_r);
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' +
'Update Services for SAP Solutions 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, 'kpatch-patch-4_18_0-193_109_1 / kpatch-patch-4_18_0-193_113_1 / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | kpatch-patch-4_18_0-193_109_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_109_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_116_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_116_1 |
redhat | rhel_e4s | 8.2 | cpe:/o:redhat:rhel_e4s:8.2 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_113_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_113_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_119_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_119_1 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2163
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42753
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4622
www.nessus.org/u?65b3c1e9
access.redhat.com/errata/RHSA-2024:0376
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=2237760
bugzilla.redhat.com/show_bug.cgi?id=2239843
bugzilla.redhat.com/show_bug.cgi?id=2240249
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
9 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
10.1%