CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
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
AI Score
Confidence
High
EPSS
Percentile
28.0%
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:0590 advisory.
kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)
kernel: use-after-free in RDMA listen() (CVE-2021-4028)
kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)
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 70300
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2022:0590. The text
# itself is copyright (C) Red Hat, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(158248);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");
script_cve_id("CVE-2021-0920", "CVE-2021-4028", "CVE-2021-4155");
script_xref(name:"RHSA", value:"2022:0590");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/06/13");
script_name(english:"RHEL 8 : kpatch-patch (RHSA-2022:0590)");
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-2022:0590 advisory.
- kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)
- kernel: use-after-free in RDMA listen() (CVE-2021-4028)
- kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)
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/2022/rhsa-2022_0590.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b42f4bbb");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2022:0590");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2027201");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2031930");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2034813");
script_set_attribute(attribute:"solution", value:
"Update the RHEL kpatch-patch package based on the guidance in RHSA-2022:0590.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:F/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:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-0920");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-4028");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(131, 416);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/01/11");
script_set_attribute(attribute:"patch_publication_date", value:"2022/02/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_eus:8.2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_46_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_47_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_51_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_56_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_60_2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_64_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_65_2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_68_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_70_1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_71_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) 2022-2024 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-2021-0920', 'CVE-2021-4028', 'CVE-2021-4155');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RHSA-2022:0590');
}
else
{
__rpm_report = ksplice_reporting_text();
}
}
var kernel_live_checks = [
{
'repo_relative_urls': [
'content/aus/rhel8/8.2/x86_64/baseos/debug',
'content/aus/rhel8/8.2/x86_64/baseos/os',
'content/aus/rhel8/8.2/x86_64/baseos/source/SRPMS',
'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',
'content/eus/rhel8/8.2/ppc64le/baseos/debug',
'content/eus/rhel8/8.2/ppc64le/baseos/os',
'content/eus/rhel8/8.2/ppc64le/baseos/source/SRPMS',
'content/eus/rhel8/8.2/x86_64/baseos/debug',
'content/eus/rhel8/8.2/x86_64/baseos/os',
'content/eus/rhel8/8.2/x86_64/baseos/source/SRPMS',
'content/tus/rhel8/8.2/x86_64/baseos/debug',
'content/tus/rhel8/8.2/x86_64/baseos/os',
'content/tus/rhel8/8.2/x86_64/baseos/source/SRPMS'
],
'kernels': {
'4.18.0-193.46.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_46_1-1-9.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.46.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_46_1-1-9.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.47.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_47_1-1-9.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.47.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_47_1-1-9.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.51.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_51_1-1-6.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.51.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_51_1-1-6.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.56.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_56_1-1-5.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.56.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_56_1-1-5.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.60.2.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_60_2-1-4.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.60.2.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_60_2-1-4.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.64.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_64_1-1-3.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.64.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_64_1-1-3.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.65.2.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_65_2-1-2.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.65.2.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_65_2-1-2.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.68.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_68_1-1-2.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.68.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_68_1-1-2.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.70.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_70_1-1-1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.70.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_70_1-1-1.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.71.1.el8_2.ppc64le': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_71_1-1-1.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
]
},
'4.18.0-193.71.1.el8_2.x86_64': {
'pkgs': [
{'reference':'kpatch-patch-4_18_0-193_71_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' +
'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, 'kpatch-patch-4_18_0-193_46_1 / kpatch-patch-4_18_0-193_47_1 / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | rhel_eus | 8.2 | cpe:/o:redhat:rhel_eus:8.2 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_46_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_46_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_47_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_47_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_51_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_51_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_56_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_56_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_60_2 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_60_2 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_64_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_64_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_65_2 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_65_2 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_68_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_68_1 |
redhat | enterprise_linux | kpatch-patch-4_18_0-193_70_1 | p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_70_1 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0920
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4028
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4155
www.nessus.org/u?b42f4bbb
access.redhat.com/errata/RHSA-2022:0590
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=2027201
bugzilla.redhat.com/show_bug.cgi?id=2031930
bugzilla.redhat.com/show_bug.cgi?id=2034813
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
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
AI Score
Confidence
High
EPSS
Percentile
28.0%