CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
12.6%
The remote Redhat Enterprise Linux 7 / 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2664 advisory.
Ansible is a simple model-driven configuration management, multi-node deployment, and remote-task execution system. Ansible works over SSH and does not require any software or daemons to be installed on remote nodes.
Extension modules can be written in any language and are transferred to managed machines automatically.
The following packages have been upgraded to a newer upstream version:
ansible (2.9.23)
Bug Fix(es):
* CVE-2021-3583 ansible: Template Injection through yaml multi-line strings with ansible facts used in template.
See:
https://github.com/ansible/ansible/blob/v2.9.23/changelogs/CHANGELOG-v2.9.rst for details on bug fixes in this release.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue 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-2021:2664. The text
# itself is copyright (C) Red Hat, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(151446);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");
script_cve_id("CVE-2021-3583");
script_xref(name:"RHSA", value:"2021:2664");
script_xref(name:"IAVB", value:"2022-B-0007");
script_name(english:"RHEL 7 / 8 : Ansible security update (2.9.23) (Important) (RHSA-2021:2664)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for Ansible.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 / 8 host has packages installed that are affected by a vulnerability as referenced
in the RHSA-2021:2664 advisory.
Ansible is a simple model-driven configuration management, multi-node
deployment, and remote-task execution system. Ansible works over SSH and
does not require any software or daemons to be installed on remote nodes.
Extension modules can be written in any language and are transferred to
managed machines automatically.
The following packages have been upgraded to a newer upstream version:
ansible (2.9.23)
Bug Fix(es):
* CVE-2021-3583 ansible: Template Injection through yaml multi-line strings
with ansible facts used in template.
See:
https://github.com/ansible/ansible/blob/v2.9.23/changelogs/CHANGELOG-v2.9.rst
for details on bug fixes in this release.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
# https://access.redhat.com/security/data/csaf/v2/advisories/2021/rhsa-2021_2664.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3328965d");
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-2021:2664");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1968412");
script_set_attribute(attribute:"solution", value:
"Update the RHEL Ansible package based on the guidance in RHSA-2021:2664.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-2021-3583");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(77);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/07/07");
script_set_attribute(attribute:"patch_publication_date", value:"2021/07/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/07");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ansible");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ansible-test");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2024 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_list(operator: 'ge', os_version: os_ver, rhel_versions: ['7','8'])) audit(AUDIT_OS_NOT, 'Red Hat 7.x / 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 && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);
var constraints = [
{
'repo_relative_urls': [
'content/dist/layered/rhel8/aarch64/ansible/2/debug',
'content/dist/layered/rhel8/aarch64/ansible/2/os',
'content/dist/layered/rhel8/aarch64/ansible/2/source/SRPMS',
'content/dist/layered/rhel8/ppc64le/ansible/2/debug',
'content/dist/layered/rhel8/ppc64le/ansible/2/os',
'content/dist/layered/rhel8/ppc64le/ansible/2/source/SRPMS',
'content/dist/layered/rhel8/s390x/ansible/2/debug',
'content/dist/layered/rhel8/s390x/ansible/2/os',
'content/dist/layered/rhel8/s390x/ansible/2/source/SRPMS',
'content/dist/layered/rhel8/x86_64/ansible/2/debug',
'content/dist/layered/rhel8/x86_64/ansible/2/os',
'content/dist/layered/rhel8/x86_64/ansible/2/source/SRPMS'
],
'pkgs': [
{'reference':'ansible-2.9.23-1.el8ae', 'release':'8', 'el_string':'el8ae', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'ansible-2'},
{'reference':'ansible-test-2.9.23-1.el8ae', 'release':'8', 'el_string':'el8ae', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'ansible-2'}
]
},
{
'repo_relative_urls': [
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/ansible/2/debug',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/ansible/2/os',
'content/dist/rhel-alt/server/7/7Server/power9/ppc64le/ansible/2/source/SRPMS',
'content/dist/rhel/power-le/7/7Server/ppc64le/ansible/2/debug',
'content/dist/rhel/power-le/7/7Server/ppc64le/ansible/2/os',
'content/dist/rhel/power-le/7/7Server/ppc64le/ansible/2/source/SRPMS',
'content/dist/rhel/server/7/7Server/x86_64/ansible/2/debug',
'content/dist/rhel/server/7/7Server/x86_64/ansible/2/os',
'content/dist/rhel/server/7/7Server/x86_64/ansible/2/source/SRPMS',
'content/dist/rhel/system-z/7/7Server/s390x/ansible/2/debug',
'content/dist/rhel/system-z/7/7Server/s390x/ansible/2/os',
'content/dist/rhel/system-z/7/7Server/s390x/ansible/2/source/SRPMS'
],
'pkgs': [
{'reference':'ansible-2.9.23-1.el7ae', 'release':'7', 'el_string':'el7ae', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'ansible-2'},
{'reference':'ansible-test-2.9.23-1.el7ae', 'release':'7', 'el_string':'el7ae', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'ansible-2'}
]
}
];
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 extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
else extra = rpm_report_get();
security_report_v4(
port : 0,
severity : SECURITY_NOTE,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'ansible / ansible-test');
}
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
12.6%