Vulnerability CVE-2021-33571

Vulnerability Name:

CVE-2021-33571 (CCN-202893)

Assigned:

2021-06-02

Published:

2021-06-02

Updated:

2022-02-22

Summary:

In Django 2.2 before 2.2.24, 3.x before 3.1.12, and 3.2 before 3.2.4, URLValidator, validate_ipv4_address, and validate_ipv46_address do not prohibit leading zero characters in octal literals. This may allow a bypass of access control that is based on IP addresses. (validate_ipv4_address and validate_ipv46_address are unaffected with Python 3.9.5+..) .

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): High Availibility (A): None

9.1 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
7.9 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): None

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

9.4 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): None

Vulnerability Type:

CWE-918

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2021-33571

Source: MISC
Type: Patch, Vendor Advisory
https://docs.djangoproject.com/en/3.2/releases/security/

Source: XF
Type: UNKNOWN
django-cve202133571-ssrf(202893)

Source: MISC
Type: Mailing List, Third Party Advisory
https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-e7fd530688

Source: CCN
Type: oss-sec Mailing List, Wed, 2 Jun 2021 11:34:09 +0200
Django security releases 3.2.4, 3.1.12, and 2.2.24 for CVE-2021-33203 and CVE-2021-33571

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210727-0004/

Source: CCN
Type: Django Web site
Django

Source: CONFIRM
Type: Patch, Vendor Advisory
https://www.djangoproject.com/weblog/2021/jun/02/security-releases/

Vulnerable Configuration:

Configuration 1:

cpe:/a:djangoproject:django:*:*:*:*:*:*:*:* (Version >= 2.2 and < 2.2.24)

OR cpe:/a:djangoproject:django:*:*:*:*:*:*:*:* (Version >= 3.0 and < 3.1.12)

OR cpe:/a:djangoproject:django:*:*:*:*:*:*:*:* (Version >= 3.2 and < 3.2.4)

Configuration 2:

cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:djangoproject:django:2.2:*:*:*:*:*:*:*

OR cpe:/a:djangoproject:django:3.1:*:*:*:*:*:*:*

OR cpe:/a:djangoproject:django:3.2:-:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:113248	P	python36-Django-3.2.7-2.3 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106660	P	python36-Django-3.2.7-2.3 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:84643	P	Security update for ardana-cobbler, cassandra, cassandra-kit, crowbar-core, crowbar-openstack, documentation-suse-openstack-cloud, grafana, kibana, openstack-heat-templates, openstack-monasca-installer, openstack-nova, python-Django, python-elementpath, python-eventlet, python-py, python-pysaml2, python-six, python-xmlschema (Moderate)	2021-07-28
oval:org.opensuse.security:def:84184	P	Security update for ardana-cobbler, cassandra, cassandra-kit, crowbar-core, crowbar-openstack, documentation-suse-openstack-cloud, grafana, kibana, openstack-heat-templates, openstack-monasca-installer, openstack-nova, python-Django, python-elementpath, python-eventlet, python-py, python-pysaml2, python-six, python-xmlschema (Moderate)	2021-07-28
oval:org.opensuse.security:def:88141	P	Security update for ardana-neutron, ardana-swift, cassandra, crowbar-openstack, grafana, kibana, openstack-dashboard, openstack-ironic, openstack-neutron, openstack-neutron-gbp, openstack-nova, python-Django1, python-py, python-pysaml2, python-xmlschema, rubygem-activerecord-session_store, venv-openstack-keystone (Moderate)	2021-06-11
oval:org.opensuse.security:def:81082	P	Security update for crowbar-openstack, grafana, kibana, monasca-installer, python-Django, python-py, rubygem-activerecord-session_store (Moderate)	2021-06-11
oval:org.opensuse.security:def:88454	P	Security update for ardana-neutron, ardana-swift, cassandra, crowbar-openstack, grafana, kibana, openstack-dashboard, openstack-ironic, openstack-neutron, openstack-neutron-gbp, openstack-nova, python-Django1, python-py, python-pysaml2, python-xmlschema, rubygem-activerecord-session_store, venv-openstack-keystone (Moderate)	2021-06-11

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