8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.732 High
EPSS
Percentile
98.1%
The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:7610 advisory.
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)
Werkzeug is a comprehensive WSGI web application library. If an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it.
The amount of CPU time required can block worker processes from handling legitimate requests. This vulnerability has been patched in version 3.0.1. (CVE-2023-46136)
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-2023:7610. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(189453);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/17");
script_cve_id("CVE-2023-44487", "CVE-2023-46136");
script_xref(name:"RHSA", value:"2023:7610");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2023/10/31");
script_xref(name:"CEA-ID", value:"CEA-2024-0004");
script_name(english:"RHCOS 4 : OpenShift Container Platform 4.12.45 (RHSA-2023:7610)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat CoreOS host is missing one or more security updates for OpenShift Container Platform 4.12.45.");
script_set_attribute(attribute:"description", value:
"The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by multiple vulnerabilities
as referenced in the RHSA-2023:7610 advisory.
- The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation
can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)
- Werkzeug is a comprehensive WSGI web application library. If an upload of a file that starts with CR or LF
and then is followed by megabytes of data without these characters: all of these bytes are appended chunk
by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an
attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it.
The amount of CPU time required can block worker processes from handling legitimate requests. This
vulnerability has been patched in version 3.0.1. (CVE-2023-46136)
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://access.redhat.com/security/cve/CVE-2023-44487");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2023-46136");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2023:7610");
script_set_attribute(attribute:"solution", value:
"Update the RHCOS OpenShift Container Platform 4.12.45 packages based on the guidance in RHSA-2023:7610.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2023-46136");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(400, 407);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/10/10");
script_set_attribute(attribute:"patch_publication_date", value:"2023/12/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8:coreos");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cri-o");
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");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.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 CoreOS');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'eq', os_version: os_ver, rhel_version: '4.12')) audit(AUDIT_OS_NOT, 'Red Hat CoreOS 4.12', 'Red Hat CoreOS ' + 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 CoreOS', cpu);
var pkgs = [
{'reference':'cri-o-1.25.5-2.rhaos4.12.git0217273.el8', 'release':'4', 'el_string':'el8', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'openshift-hyperkube'}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'RHCOS' + package_array['release'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference &&
_release &&
(!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
rpm_check(release:_release, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'cri-o');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | 8 | cpe:/o:redhat:enterprise_linux:8:coreos |
redhat | enterprise_linux | cri-o | p-cpe:/a:redhat:enterprise_linux:cri-o |
8 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.732 High
EPSS
Percentile
98.1%