The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0916 advisory.
etcd: Large slice causes panic in decodeRecord method (CVE-2020-15106)
etcd: DoS in wal/wal.go (CVE-2020-15112)
etcd: directories created via os.MkdirAll are not checked for permissions (CVE-2020-15113)
etcd: gateway can include itself as an endpoint resulting in resource exhaustion and leads to DoS (CVE-2020-15114)
etcd: improper validation of passwords allow an attacker to guess or brute-force userโs passwords (CVE-2020-15115)
etcd: no authentication is performed against endpoints provided in the --endpoints flag (CVE-2020-15136)
Note that Nessus has not tested for these issues but has instead relied only on the applicationโs self-reported version number.
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2021:0916. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(147868);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/23");
script_cve_id(
"CVE-2020-15106",
"CVE-2020-15112",
"CVE-2020-15113",
"CVE-2020-15114",
"CVE-2020-15115",
"CVE-2020-15136"
);
script_xref(name:"RHSA", value:"2021:0916");
script_name(english:"RHEL 8 : Red Hat OpenStack Platform 16.1.4 (etcd) (RHSA-2021:0916)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as
referenced in the RHSA-2021:0916 advisory.
- etcd: Large slice causes panic in decodeRecord method (CVE-2020-15106)
- etcd: DoS in wal/wal.go (CVE-2020-15112)
- etcd: directories created via os.MkdirAll are not checked for permissions (CVE-2020-15113)
- etcd: gateway can include itself as an endpoint resulting in resource exhaustion and leads to DoS
(CVE-2020-15114)
- etcd: improper validation of passwords allow an attacker to guess or brute-force user's passwords
(CVE-2020-15115)
- etcd: no authentication is performed against endpoints provided in the --endpoints flag (CVE-2020-15136)
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-2020-15106");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-15112");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-15113");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-15114");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-15115");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-15136");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2021:0916");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1868870");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1868872");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1868874");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1868878");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1868880");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1868883");
script_set_attribute(attribute:"solution", value:
"Update the affected etcd package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-15136");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-15115");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(285, 287, 305, 400);
script_set_attribute(attribute:"vuln_publication_date", value:"2020/08/05");
script_set_attribute(attribute:"patch_publication_date", value:"2021/03/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/17");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:etcd");
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) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("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');
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: 'ge', os_version: os_ver, rhel_version: '8')) audit(AUDIT_OS_NOT, 'Red Hat 8.x', '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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);
var constraints = [
{
'repo_relative_urls': [
'content/dist/layered/rhel8/x86_64/openstack-cinderlib/16.1/debug',
'content/dist/layered/rhel8/x86_64/openstack-cinderlib/16.1/os',
'content/dist/layered/rhel8/x86_64/openstack-cinderlib/16.1/source/SRPMS',
'content/dist/layered/rhel8/x86_64/openstack-deployment-tools/16.1/debug',
'content/dist/layered/rhel8/x86_64/openstack-deployment-tools/16.1/os',
'content/dist/layered/rhel8/x86_64/openstack-deployment-tools/16.1/source/SRPMS',
'content/dist/layered/rhel8/x86_64/openstack-tools/16/debug',
'content/dist/layered/rhel8/x86_64/openstack-tools/16/os',
'content/dist/layered/rhel8/x86_64/openstack-tools/16/source/SRPMS',
'content/dist/layered/rhel8/x86_64/openstack/16.1/debug',
'content/dist/layered/rhel8/x86_64/openstack/16.1/os',
'content/dist/layered/rhel8/x86_64/openstack/16.1/source/SRPMS'
],
'pkgs': [
{'reference':'etcd-3.3.23-1.el8ost', 'cpu':'x86_64', 'release':'8', 'el_string':'el8ost', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'openstack-'}
]
}
];
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;
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 (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)) flag++;
}
}
if (flag)
{
var extra = NULL;
if (empty_or_null(applicable_repo_urls)) extra = rpm_report_get() + redhat_report_repo_caveat();
else extra = rpm_report_get() + redhat_report_package_caveat();
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, 'etcd');
}
Vendor | Product | Version | CPE |
---|---|---|---|
redhat | enterprise_linux | 8 | cpe:/o:redhat:enterprise_linux:8 |
redhat | enterprise_linux | etcd | p-cpe:/a:redhat:enterprise_linux:etcd |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15106
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15112
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15113
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15114
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15115
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15136
access.redhat.com/errata/RHSA-2021:0916
access.redhat.com/security/cve/CVE-2020-15106
access.redhat.com/security/cve/CVE-2020-15112
access.redhat.com/security/cve/CVE-2020-15113
access.redhat.com/security/cve/CVE-2020-15114
access.redhat.com/security/cve/CVE-2020-15115
access.redhat.com/security/cve/CVE-2020-15136
bugzilla.redhat.com/1868870
bugzilla.redhat.com/1868872
bugzilla.redhat.com/1868874
bugzilla.redhat.com/1868878
bugzilla.redhat.com/1868880
bugzilla.redhat.com/1868883